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34518585b60177bf2fd78db8554febdd0a13ba9b
parsedmarc/parsedmarc/resources/maps/base_reverse_dns_map.csv
T
Sean Whalen 34518585b6 Classify reverse DNS map: next 1000 unmapped MMDB ASN domains (#754) 
The next 1000 by aggregate IPv4 weight, all sitting in the long tail (each
candidate ASN holds ~7,400 IPv4 addresses, ~0.21% of total v4 weight), so
auto-classification rate is modest compared to head-batches:

- 460 added to base_reverse_dns_map.csv (ISP 344, Web Host 60, Education 21,
  MSP 12, Healthcare 8, Government 8, Finance 7).
- 540 added to known_unknown_base_reverse_dns.txt — homepages that were
  parked, behind a Cloudflare bot challenge, returning a generic-server test
  page, in obscure languages with no telecom-keyword cognates the classifier
  recognized, or whose WHOIS / MMDB as_name didn't combine with any
  homepage signal to clear two corroborating sources.

Classifier improvements applied this batch (relative to prior batches' code):

- MMDB as_name is the primary brand source, with cleaned title as fallback
  and domain-derived as last resort (WHOIS is mostly privacy-redacted at
  this depth in the long tail).
- Title-segment selection now prefers the segment whose simplified form
  contains the domain root, catching cases like accessmontana.com whose
  as_name is the holding company "MONTANA WEST, L.L.C." but whose title
  surfaces the operator brand "Access Montana".
- as_name fallback for ISP added "Communications" (with a media-context
  guard so "Christian Broadcasting Network" doesn't hit) plus bare
  "Internet" / "Cable" / "Telephone Co." patterns common in rural-US ISP
  brands.
- Government TLD list expanded for .go.id, .gv.at, .gov.cn, .gob.cl/ar/gt,
  .admin.ch, etc.; Education TLD list expanded for .ac.kr / .ac.za /
  .ac.nz / .edu.cn / .edu.tw / .edu.sg / .edu.my / .edu.ph / .edu.eg.
- MSP detection re-added (`it solutions` / `managed it support` /
  `managed tech` patterns) for marconet.com / odyssey.uk / vmi.se type
  long-tail managed-IT shops.
- Brand cleanup deepened to handle Brazilian EPP / EIRELI ME, Italian
  s.c.a r.l, Polish sp z o.o variants, Lithuanian UAB, Czech Druzstvo,
  Venezuelan C.A., trailing-single-letter artifacts, and double-spaces.
- Encoding-mojibake fixer for the common UTF-8-as-Latin-1 cases
  ("Fibra óptica" → "Fibra óptica") so Spanish/Portuguese ISP pages
  classify even when collect_domain_info.py mishandled the encoding.

Co-authored-by: Sean Whalen <seanthegeek@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-07 12:06:22 -04:00

491 KiB
Raw Blame History

1base_reverse_dnsnametype
20101host.com0101HOSTWeb Host
3012.net.il012Mobile (Partner)ISP
4018.co.ilXPhone (XFone 018)ISP
5019mobile.co.il019Mobile (Telzar)ISP
602online.deTelefonica O2 GermanyISP
707internet.roSTYLISH BY A&L SRLISP
8099.net.il099 Primo CommunicationsISP
91-2-1marketing.comforeUPSaaS
101-grid.com1-gridWeb Host
111-msp.netInternet de Nuevo Laredo, S.A de C.V.ISP
121-net.com.sg1-Net SingaporeISP
131.meOne Crna GoraISP
141000island.net1000 IslandISP
1510086.cnChina MobileISP
16101netlink.com101NetlinkISP
171111systems.com11:11 SystemsMSP
18123.net123NETISP
19123hjemmeside.dkOne.comWeb Host
20123hjemmeside.noOne.comWeb Host
21123homepage.itOne.comWeb Host
22123kotisivu.fiOne.comWeb Host
23123minsida.seOne.comWeb Host
24123miweb.esOne.comWeb Host
25123paginaweb.ptOne.comWeb Host
26123siteweb.frOne.comWeb Host
27123webseite.atOne.comWeb Host
28123webseite.deOne.comWeb Host
29123website.beOne.comWeb Host
30123website.chOne.comWeb Host
31123website.luOne.comWeb Host
32123website.nlOne.comWeb Host
331240.huEuroCable HungaryISP
34126.comNetEaseEmail Provider
351310.io1310ISP
36158.hkAnsheng Network TechnologyWeb Host
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421blu.de1bluWeb Host
431cent.hostOC Networks (1cent.host)Web Host
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480alfredstate.eduSUNY AlfredEducation
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493allalphacloud.comAllAlphaCloud (Malakmadze Web)Web Host
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495allconecta.net.brAll ConectaISP
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511allrede.tec.brAllredeISP
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515allworldit.comAllWorldITWeb Host
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520almatv.kzAlmaTVISP
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527alpha-prm.jpOtsuka CorporationMSP
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530alphalink.frAlphalinkISP
531alphavps.comAlphaVPSIaaS
532alpine-communications.comAlpine Communications L.C.ISP
533alpinedc.chAlpineDCWeb Host
534alsardfiber.comAlSard Fiber (Pulk)ISP
535alsatis.comAlsatisISP
536alsatwireless.comAir Link Rural BroadbandISP
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538altafiber.comaltafiberISP
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540altair.kr.uaTRK Cable TVISP
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543altarede.com.brAltaRedeISP
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545altecom.netFIBRACAT TelecomISP
546altegrosky.ruAltegroSkyISP
547altel.kzAtalISP
548altemica.netAltemicaMSP
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554altimatel.comAltima TelecomISP
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556altnet.mdAltnetISP
557altovalenet.com.brAlto Vale NetISP
558altura.ruAlturaISP
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560alvsbyn.seAlvsbyn KommunGovernment
561alwaysdata.comalwaysdataWeb Host
562alwaysdata.netalwaysdataWeb Host
563alyrica.netAlyrica NetworksISP
564amadeus-it.comAmadeus IT GroupSaaS
565amanah.comAmanah TechWeb Host
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567amatechtel.comAMA TechTelISP
568amatisnetworks.comamatisMSP
569amazon.comAmazonTechnology
570amazonasnettelecom.com.brAmazonas NetISP
571amazonaws.comAmazon Web Services (AWS)PaaS
572amazonett.com.brAmazonetISP
573amazoninter.net.brAmazon Inter.NetISP
574amazonses.comAmazon SESSaaS
575amb.chAzienda Multiservizi BellinzonaUtilities
576amberit.com.bdAmber ITISP
577amberit.netAmber ITISP
578ambisys.netAmbisysHealthcare
579ambit.com.twAmbit MicrosystemManufacturing
580ambrogio.comAmbrogioISP
581amd.comAMDManufacturing
582amdintl.com.twKangjian Biomedical TechnologyHealthcare
583amdocs.comAmdocsSaaS
584america-net.com.brAmerica-NETISP
585america.netAmerica.netWeb Host
586american.eduAmerican UniversityEducation
587americanam.orgAmerican Advanced ManagementHealthcare
588americanet.com.brVeroISP
589americanexpress.comAmerican ExpressFinance
590americantower.comAmerican TowerTechnology
591americantower.com.brAmerican TowerTechnology
592americatelnet.com.peAmericatel PeruISP
593amerinoc.comAmeriNOCWeb Host
594amerisourcebergen.comCencoraHealthcare
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596amethyst.co.jpAmethystHealthcare
597amfam.comAmerican Family InsuranceFinance
598amherst.eduAmherst CollegeEducation
599amherstcomm.netAmherst CommunicationsISP
600aminidc.comAmin IDCWeb Host
601amis.hrA1 Croatia (Amis)ISP
602amito.comAmitoWeb Host
603amnet.com.niAmnet TelecomunicacionesISP
604amobia.comAmobiaISP
605amointernet.com.brAMO InternetISP
606ampernet.com.brAmpernetISP
607amplex.netAmplexISP
608amplia.co.ttAMPLIAISP
609amplifyapp.comAmazon AWSPaaS
610amplitudo.meAmplitudoSaaS
611amres.ac.rsAMRESEducation
612amt.ruAMT TelecomISP
613amtservices.itAMT ServicesMSP
614amur.ruRostelecom AmurISP
615amuri.netAmuri NetISP
616an-net.ruAnnet TverISP
617analabs.com.sgANALABSConstruction
618analog.comAnalog DevicesManufacturing
619anc-tv.co.jpAzumino Network Community TVISP
620anchor.co.ukAnchor Computer SystemsSaaS
621anditel.comAnditelISP
622andorratelecom.adAndorra TelecomISP
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624andritz.comAndritzManufacturing
625anet.net.thANETISP
626anexia-it.comAnexiaWeb Host
627anexia.comAnexiaWeb Host
628angelo.eduAngelo State UniversityEducation
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630angolatelecom.comAngola TelecomISP
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632anid.com.brANIDNonprofit
633animaeducacao.com.brÂnima EducaçãoEducation
634ankara.edu.trAnkara UniversityEducation
635anl.govArgonne National LaboratoryGovernment
636anonet.inAnonetISP
637ans.co.ukANSMSP
638anschlusswerk.deAnschlussWerkISP
639ansluten.netAnsluten HostingWeb Host
640ansto.gov.auAustralian Nuclear Science and Technology OrganisationGovernment
641antagonist.cloudAntagonistWeb Host
642antboxnetworks.comAntbox NetworksWeb Host
643antel.com.uyAntelISP
644antelecom.netAntelecomISP
645antelecom.net.brAN TelecomISP
646anthembroadband.comAnthem BroadbandISP
647anti-spam-premium.comLiquid WebWeb Host
648anticlockwise.com.auAnticlockwiseMSP
649antietambroadband.comAntietam BroadbandISP
650antik.skANTIK Telecom s.r.oISP
651antilles-sante.comAAS MedicalHealthcare
652antispamcloud.comN-ableEmail Security
653antispameurope.comHornetsecurityEmail Security
654anw.atAlpha NetWorkISP
655anyang.ac.kranyang UniversityEducation
656anyconnecting.comAnyConnect Information TechnologyWeb Host
657anydigital.sgAnyDigitalWeb Host
658anylogic.comAnyLogicSaaS
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660aoc.govArchitect of the CapitolGovernment
661aofidc.comAofei Data InternationalWeb Host
662aoiot.ruIOT (Skolkovo)IaaS
663aon.comAonFinance
664aonet.com.brAonetISP
665aopa.orgAOPATravel
666aoyama.ac.jpAoyama Gakuin UniversityEducation
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668apa-it.atAPA-TechMSP
669apa.atAPA-TechMSP
670apakgroup.netAPAK GroupMSP
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673apexsol.comApex TechnologyMarketing
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675apfutura.netAPfutura TelecomISP
676aph.gov.auDepartment of Parliamentary ServicesGovernment
677aphp.frAPHP Paris HospitalsHealthcare
678apjii.or.idUniversitas Islam Negeri Raden Fatah PalembangISP
679aplienfi.esGPON LineaISP
680aplusgroup.netA Plus InternationalHealthcare
681apmoller.comA.P. Moller - MaerskLogistics
682apnic.netAPNICNonprofit
683apogee.usBoldynISP
684apogeehost.comApogeeHOSTWeb Host
685apol.com.twAPOLISP
686app-ionos.spaceIONOSWeb Host
687app-tec.comApplied TechnologiesISP
688appalachianwireless.comAppalachian WirelessISP
689apple.comAppleEmail Provider
690applefibernet.comApple FibernetISP
691applicationx.netApplication XMSP
692appliedi.netApplied InnovationsMSP
693appliedmaterials.comApplied MaterialsManufacturing
694appliwave.comEurofiber France (Appliwave)ISP
695appnexus.comMicrosoft Advertising (Xandr)Marketing
696appriss.comApprissSaaS
697appriver.comOpenText AppRiverEmail Security
698apps-1and1.comIONOSWeb Host
699apps-1and1.netIONOSWeb Host
700appsfruit.comAppsFruitMarketing
701appspot.comGooglePaaS
702aps-inc.co.jpArahi PolysliderIndustrial
703aps.eduAlbuquerque Public SchoolsEducation
704apsfl.inAPSFL Andhra Pradesh State FiberNetISP
705aptalaska.comAP&TISP
706aptalaska.netAP&TISP
707aptg.com.twAPBTISP
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709aptus.co.tzAptus SolutionsIaaS
710aptus.ieAptus IrelandMSP
711apuacom.itBrainbox (ApuaCom)ISP
712apxnetprovedor.com.brApx NetISP
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714aqmd.govSouth Coast AQMDGovernment
715aqmhost.netAqmHostWeb Host
716aqr.comAQR Capital ManagementFinance
717aquaray.comAqua RayWeb Host
718aragon.esGovernment of AragonGovernment
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720aramcoinc.comSaudi AramcoIndustrial
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722arapabruzzo.itARAPIndustrial
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725arbuckleonline.comArbuckle CommunicationsISP
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727arcadiz.comArcadizISP
728archerirm.usArcher GRCSaaS
729archimedianet.itArchimediaRetail
730archive.orgInternet Archive CanadaISP
731archives.govNational Archives and Records AdministrationGovernment
732archtopfiber.comArchtop FiberISP
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735arctel.suARCTIC TELECOM Limited Liability CompanyISP
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737ardc.netAmateur Radio Digital CommunicationsNonprofit
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740arelion.comArelionISP
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744ariadne-t.grAriadne-TISP
745ariamax.itARIAGovernment
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748arikiinternet.com.brAriki InternetISP
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750arista.comArista NetworksManufacturing
751aristotle.netAristotle InternetISP
752arizona.eduUniversity of ArizonaEducation
753arkaden.seArkaden KonsultMSP
754arkansas.govArkansas GovernmentGovernment
755arkdna.comARK Data CentersWeb Host
756arkitech.itArkitechTechnology
757arkwest.comArkwest CommunicationsISP
758arlingtonva.usArlington County VirginiaGovernment
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761arnes.siARNESEducation
762arosscloud.comAROSSCLOUDWeb Host
763arpinet.amArpinetISP
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765arqiva.comArqivaISP
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767ars.uzARS-InformISP
768arsat.com.arARSATISP
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770arsys.netArsysWeb Host
771artcom.plART-COMISP
772artectelecom.netArtec TelecomISP
773artehosting.com.mxArtehostingWeb Host
774artelecom.com.brAR Telecom BrasilISP
775artelecom.ptAR TelecomISP
776arteria-net.comARTERIA NetworksISP
777artfiles.deArtfilesWeb Host
778arthatel.co.idArtha TelekomindoMSP
779artmotion.netARTMOTIONISP
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781artofautomation.netArt of AutomationMSP
782artx.ruArtXISP
783aruba.itAruba.itWeb Host
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785arvato-systems.deArvato SystemsMSP
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790as204035.netoneCorpMSP
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792as29006.netAcoraMSP
793as29550.netSimply TransitISP
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802as6723.netAS6723 Ukrainian OperatorISP
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806asahi-net.jpASAHI NetISP
807asahi-net.or.jpASAHI NetISP
808asahikawa-med.ac.jpAsahikawa MedHealthcare
809asak.atASAK GlasfaserISP
810asanetce.com.brASANETISP
811asaptelecom.com.brAsap Global TelecomISP
812asavie.comAkamaiTechnology
813asc.eduAlabama Supercomputer AuthorityEducation
814ascension.orgAscension HealthHealthcare
815ascensionhealth.orgAscensionHealthcare
816ascenty.comAscentyWeb Host
817asd20.orgAcademy School District 20Education
818asdasd.itASDASDISP
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820asem-tech.comASEMtechIndustrial
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824ashlandfiber.netAshland Fiber NetworkHealthcare
825ashtelstudios.comAshtel StudiosHealthcare
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830asianaidt.comAsiana IDTMSP
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832asianetbroadband.inAsianet BroadbandISP
833asianvision.com.phAsian Vision Cable PhilippinesISP
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838ask4.comASK4ISP
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840askiran.comAndishe Sabz KhazarWeb Host
841asklepios.comAsklepiosHealthcare
842asl2.liguria.itASL2Healthcare
843asmanfaraz.comAsmanfaraz SepahanISP
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846asom-net.dkASOM-NetISP
847aspirets.comAspire Technology SolutionsMSP
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850asseco.cloudAsseco CloudWeb Host
851assentportal.comAssentSaaS
852assistemas.net.brAS SistemasISP
853assp.orgAmerican Society of Safety ProfessionalsHealthcare
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855asta-net.plAsta-NetISP
856astate.eduArkansas State UniversityEducation
857astel.kzFreedom Satellite (Astel)ISP
858asteria.comAsteriaSaaS
859astound.comAstound BroadbandISP
860astra.in.uaPC Astra-netISP
861astralinfo.co.ukAstral InformaticsMarketing
862astratelekom.comASTRA TELEKOM DOO BEOGRADISP
863astreaconnect.comAstrea CommunicationsISP
864astuteinternet.comAstute InternetISP
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866asu-vei.ruASU-VEIIndustrial
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871atb-nett.noATB-Nett (Telefiber)ISP
872atcbroadband.comATC BroadbandISP
873atcjet.netATC CommunicationsISP
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878ateky.com.brAteky Internet Eireli MeISP
879ateky.net.brAteky InternetISP
880atel-rybinsk.ruAtelRybinskISP
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882ateltelecom.com.brNatel TelecomISP
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886atheer.net.saAtheer Net (Jeraisy)ISP
887athenahealth.comathenahealthHealthcare
888athenet.netNTD Networks (Athenet)ISP
889athleanx.comATHLEAN-XRetail
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891ati.pe.gov.brATI PernambucoGovernment
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893atiinternet.com.brATI InternetISP
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896atlantic.netAtlantic.NetWeb Host
897atlanticmetro.net365 Data CentersWeb Host
898atlantiquetelecom.netAtlantique Telecom Cote d'IvoireISP
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900atlantisnet.bgAtlantis NetISP
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930atualnet.netAtualNetISP
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940auckland.ac.nzUniversity of AucklandEducation
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953aurorahealthcare.orgAdvocate HealthHealthcare
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956aussiebb.com.auAussie BroadbandISP
957aussiebroadband.com.auAussie BroadbandISP
958australianjewishnews.comThe Australian Jewish NewsNews
959australiaonline.net.auAustralia OnlineISP
960austrocontrol.atAustro ControlGovernment
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963autodesk.comAutodeskSaaS
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997awn.co.thAIS Advanced Wireless NetworkISP
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1109basf.comBASFIndustrial
1110bashtel.ruBashtelISP
1111basicserver.ioZitcomWeb Host
1112basketnews.ltBasketNewsSports
1113basmail.jpTOKI Communications CorporationISP
1114bassac.frBassacConstruction
1115batan.coopCooperativa BatanUtilities
1116batelco.comBatelcoISP
1117bates.eduBates CollegeEducation
1118battelle.orgBattelle Memorial InstituteScience
1119bausch.comBausch and LombHealthcare
1120baxet.ruBaxet HoldingWeb Host
1121baxetgroup.comBaxet GroupWeb Host
1122baxter.comBaxter HealthcareHealthcare
1123bayada.comBAYADA Home Health CareHealthcare
1124baycix.deBayCIXWeb Host
1125bayer.comBayerHealthcare
1126bayer.deBayerHealthcare
1127baykonur.ruBaykonur SvyazinformISP
1128baylor.eduBaylor UniversityEducation
1129baynet.ne.jpTokyo Bay NetworkISP
1130bayobab.africaBayobab (MTN GlobalConnect)ISP
1131bayonette.noBayonette (Nexthop)Web Host
1132bayoulandcs.comBayouland Computer SolutionsMSP
1133baza.netBaza.NETISP
1134bb-niigata.jpNiigata Communication ServiceISP
1135bb.com.brBanco do BrasilFinance
1136bbbell.itBBBellISP
1137bbc.comBBCNews
1138bbemaildelivery.comBombBombMarketing
1139bbft.noBredbåndsfylketISP
1140bbgtelecom.com.brBBG TelecomISP
1141bbi.co.bwBroadband Botswana InternetISP
1142bbix.netBBIXISP
1143bbkhost.comCyberForestIaaS
1144bbned.nlOdidoISP
1145bbnet.ieEOBO Ltd T/A BBnetISP
1146bbnetup.comBBNET UPISP
1147bbnetup.com.brBBNET UPISP
1148bbnl.co.inBangalore Broadband NetworkISP
1149bbraun.deB. Braun MelsungenHealthcare
1150bbsred.com.mxBBS RedISP
1151bbt.com.arBroadBandTechISP
1152bbtel.comBBTELISP
1153bbtower.co.jpBroadBand TowerWeb Host
1154bbts.netBroad Band Telecom ServicesISP
1155bc.eduBoston CollegeEducation
1156bc.netBCNETEducation
1157bc9.ne.jpKanuma Cable TelevisionISP
1158bca.co.idBank Central Asia (BCA)Finance
1159bcaa.comBCAAFinance
1160bcbsal.orgBlue Cross and Blue Shield of AlabamaHealthcare
1161bcbsm.comBlue Cross Blue Shield of MichiganHealthcare
1162bcbsnc.comBlue Cross Blue Shield of North CarolinaHealthcare
1163bcc.co.ugBlue Crane Communications UgandaISP
1164bcdtravelmexico.com.mxBCD Travel MexicoTravel
1165bce.luBCE LuxembourgISP
1166bcit.caBritish Columbia Institute of TechnologyEducation
1167bclan.ruBCLanISP
1168bcm.eduBaylor College of MedicineEducation
1169bcn.catInstitut Municipal d'InformaticaGovernment
1170bcnetsp.com.brBC NetISP
1171bcntele.comBCN TelecomISP
1172bcs-ea.comBandwidth and Cloud Services Group (BCS)ISP
1173bcs.orgBCSNonprofit
1174bcsbeavers.orgMadison-Oneida BOCESEducation
1175bcx.co.zaBCXMSP
1176bdcom.comBDCOM OnlineISP
1177bdconnectctg.netBDconnectISP
1178bdvco.comBiodyneHealthcare
1179be.chCanton of BernGovernment
1180beaconbroadband.comBeacon BroadbandISP
1181beacontechnologies.comBeacon TechnologiesMSP
1182beaming.co.ukBeamingISP
1183beamspeed.comBeamspeedISP
1184beanfield.comBeanfieldISP
1185bearingdepot.comBearing Depot & SupplyRetail
1186beaumont.orgCorewell Health (Formerly Beaumont)Healthcare
1187bec.ukBE ComputingIaaS
1188beccommunications.comBEC CommunicationsISP
1189becfiber.comBEC FiberISP
1190bechtel.comBechtelConstruction
1191bechtle.comBechtle Managed ServiceMSP
1192beckman.comBeckman CoulterHealthcare
1193becloud.bybeCloud BelarusWeb Host
1194bedag.chBedag InformatikMSP
1195bedbathandbeyond.comBed Bath & BeyondRetail
1196bedge.comBEDGEWeb Host
1197bee.net.tnBee (Smart Solutions Tunisia)ISP
1198beecreek.netBee Creek CommunicationsISP
1199beehive.netBeehive BroadbandISP
1200beeksfinancialcloud.comBeeksIaaS
1201beeline.kzBeelineISP
1202beeline.ruBeelineISP
1203beeline.uzBeelineISP
1204beeonline.azBeeonlineISP
1205beget.appBegetWeb Host
1206beget.comBegetWeb Host
1207beget.ruBegetWeb Host
1208begetcdn.cloudBegetWeb Host
1209bek.coopBEK CommunicationsISP
1210bekkoame.co.jpBEKKOAMEISP
1211bektel.comBEK CommunicationsISP
1212belairinternet.comZentro InternetISP
1213belcloud.netBelcloudWeb Host
1214beld.comBraintree Electric Light Dept.Government
1215belicom.net.uaBELICOM.NETISP
1216bell.caBell CanadaISP
1217bell.netBell CanadaISP
1218bell.net.mtBellnet MaltaISP
1219bellafrica.comBell CommunicationsISP
1220belltele.inBerlin,GermanyISP
1221belnet.beBELNETEducation
1222belong.com.auBelong (Telstra)ISP
1223beltelecom.byBeltelecomISP
1224beltraonet.com.brBeltrãonetISP
1225belwave.comBelWave CommunicationsISP
1226belwue.deBelWüEducation
1227bendigotelco.com.auBendigo TelcoISP
1228bendtel.comBendTelISP
1229benintelecoms.bjSBIN BeninISP
1230benkan.co.jpBenkanIndustrial
1231benlomandconnect.comBen Lomand Rural Telephone CooperativeISP
1232beotel.netBeotelNetISP
1233bepc.comBasin Electric Power CooperativeUtilities
1234berea.eduBerea CollegeEducation
1235bergen.orgBergen County Vocational Technical School DistrictEducation
1236bergon.netBergon InternetISP
1237berkeley.eduUC BerkleyEducation
1238berksiu.orgBerks County Intermediate UnitEducation
1239bernco.govBernalillo CountyGovernment
1240berneyassocies.comBerney AssociésConsulting
1241bernofarm.comBernofarmHealthcare
1242beskidmedia.plBeskid MediaISP
1243best.net.uaBest ISPISP
1244bestbuy.comBest BuyRetail
1245bestel.com.mxBestelISP
1246bestline.netAustin BestlineMSP
1247besttelecom.laSkytelecom , Transit provider and ISP in Vientiene.ISP
1248bestwestern.comBest WesternTravel
1249bet365.combet365Entertainment
1250beth.k12.pa.usBethlehem Area School DistrictEducation
1251bethel.eduBethel UniversityEducation
1252bethnet.co.zaBETHNET ccISP
1253betterhomeowners.comInTouch SystemsMarketing
1254bevcomm.netBevcommISP
1255beyond.plBeyond.plWeb Host
1256beyondrm.comBeyond Relationship MarketingMarketing
1257bezeq.co.ilBezeqISP
1258bezeqint.netBezeq InternationalISP
1259bfh.chBerner FachhochschuleEducation
1260bgctv.com.cnBeijing Gehua CATVISP
1261bgp.netBGP Network HKISP
1262bgpnet.comBGPNETIaaS
1263bgsu.eduBowling Green State UniversityEducation
1264bgwan.comVarnaLan (Geodim)ISP
1265bhp.comBHPIndustrial
1266bhtelecom.baBH TelecomISP
1267bi.ltBitė Lithuania (Mezon)ISP
1268bia.govUS Bureau of Indian AffairsGovernment
1269biaman.plBIAMAN PoznanEducation
1270bics.comBICS Belgacom InternationalISP
1271bigband.net.myBigband MalaysiaISP
1272bigbend.netBig Bend TelephoneISP
1273bigbiz.comBigBiz Internet ServicesWeb Host
1274bigcommerce.netBigCommerceSaaS
1275bigleaf.netBigleaf NetworksISP
1276biglobe.co.jpBIGLOBEISP
1277biglobe.ne.jpBIGLOBEISP
1278bignet.com.brBCMG InternetISP
1279bigpond.comTelstraISP
1280bigpond.net.auTelstraISP
1281bigrivertelephone.comBig River TelephoneISP
1282bigscoots.comBigScootsWeb Host
1283bigstep.comBigstep CloudIaaS
1284bigtelecom.ruBig TelecomISP
1285bih.networkInternet Harbor International COISP
1286biisk.ruSotrudnik Plus (Biisk)ISP
1287bik.nuBredband i KristianstadISP
1288bilink.com.brBilink TelecomunicaçõesISP
1289bilink.uaBilinkISP
1290bilkent.edu.trBilkent UniversityEducation
1291binary.netBinary NetISP
1292binaryracks.comBinary RacksWeb Host
1293binat.net.ilBinatISP
1294binero.comBineroWeb Host
1295binero.seBineroWeb Host
1296binghamton.eduBinghamton UniversityEducation
1297biodose.comec² Software SolutionsHealthcare
1298biohost.deBIOHOSTWeb Host
1299bionic.studioBionic StudioMarketing
1300biotika.skBiotikaHealthcare
1301bird.comBird (Formerly SparkPost)Marketing
1302birlink.azBirlinkISP
1303bisno1.co.jpBis Co., Ltd.Construction
1304bisping.deBisping & BispingISP
1305bistech.co.ukBistechMSP
1306bisv.ruBisv.ruISP
1307bit-drive.ne.jpNURO BizISP
1308bit.nlBIT BVWeb Host
1309bitco.co.zaBitCoISP
1310bitcom.com.brBitcom Internet FibraISP
1311bitcom.seBitcom GoteborgISP
1312bitcommand.comBitCommandWeb Host
1313bite.ltBiteISP
1314bite.lvBiteISP
1315bitel.com.peBitelISP
1316bitel.deBITel BielefeldISP
1317biterika.ruBiterikaWeb Host
1318bitfluxng.comBitflux CommunicationsISP
1319bitgravity.comBitGravityWeb Host
1320bitiora.comBitioraISP
1321bitmail.com.brBitmail TelcomISP
1322bitmarck.deBitmarckMSP
1323bitnet.net.idBITNET ISPISP
1324bitrace.ruBitrace telecomISP
1325biznetgio.comBiznet GioIaaS
1326biznetnetworks.comBiznet NetworksISP
1327biztel.ruBiz TelecomISP
1328bizzinternet.com.brBizz InternetISP
1329bjarekraft.seBjare KraftUtilities
1330bjc.orgBJC HealthCareHealthcare
1331bkdat.netWillibald Hambammer trading as BK-DAT Electronics e.U.ISP
1332bkm.uzUzbektelekomISP
1333bkns.vnBKNS Bach KimWeb Host
1334bkup.com.brBkup TelecomISP
1335blackandco.comBlack KnightSaaS
1336blackberry.comBlackBerrySaaS
1337blackfoot.netBlackfootISP
1338blackfriarsam.comBlackfriars Asset ManagementFinance
1339blackgate.nlBlackGATEWeb Host
1340blacknight.comBlacknight SolutionsWeb Host
1341blacknight.ieBlacknight Internet SolutionsISP
1342blackrock.comBlackRock Financial ManagementFinance
1343blacksun.caMSP CorpWeb Host
1344blanksoft.devBlankSoftMSP
1345blastcomm.comBlast CommunicationsISP
1346blazenet.bizBlazeNetISP
1347blazingfast.ioBlazingFast (Softech)Web Host
1348blazingseollc.comRayobyte (Blazing SEO)SaaS
1349blc.fiBLC TelecomISP
1350bledsoe.netBTC Fiber (Bledsoe)ISP
1351bleucloud.frBleuIaaS
1352blic.netSupernovaISP
1353blickle.comBlickleManufacturing
1354blinktelecom.com.brBlink TelecomISP
1355blitzmediahosting.caBlitz MediaWeb Host
1356blix.comBlix SolutionsISP
1357blizzard.comBlizzard EntertainmentEntertainment
1358blokowe.plSieci Blokowe S.CISP
1359bloom.hostAME HostingIaaS
1360bloomberg.comBloombergFinance
1361bloomingdalecom.comBloomingdale CommunicationsISP
1362blowtech.com.twBlowplas TechnologyManufacturing
1363bls.govU.S. Bureau of Labor StatisticsGovernment
1364bluebirdnetwork.comBluebird FiberISP
1365bluebridgenetworks.comBlue Bridge NetworksWeb Host
1366bluecrossmn.comBlue Cross Blue Shield MinnesotaFinance
1367bluedotdata.co.zaSunset Rose Investments (PTY)ISP
1368bluegrass.netIntermartISP
1369bluegrassnetwork.comBluegrass NetworkISP
1370bluehost.comBluehostWeb Host
1371blueline.mgGulfsat (Blueline) MadagascarISP
1372bluemission.netBlue MissionWeb Host
1373bluemountainnet.comBlue Mountain Networks (Gorge)ISP
1374bluesea.orgBlue Sea FoundationMarketing
1375bluesky.asBluesky Communications (American Samoa)ISP
1376bluestreamfiber.comBlue Stream FiberISP
1377bluetie.comBlueTieMSP
1378bluevalley.netBlue ValleyISP
1379bluevps.comBlueVPSWeb Host
1380blueweb.co.krBlueWebWeb Host
1381bluewireless.comBlue WirelessISP
1382blufibre.caBLU Fibre NetworksISP
1383bme.huBudapest University of Technology and EconomicsEducation
1384bmhcc.orgBaptist Memorial Health CareHealthcare
1385bmjnet.com.brBMJ NetISP
1386bmo.comBMO (Bank of Montreal)Finance
1387bms.comBristol Myers SquibbHealthcare
1388bmw.comBMWAutomotive
1389bn-t.debn:t Blatzheim Networks TelecomISP
1390bn.byBusiness Network BelarusISP
1391bnc.caNational Bank of CanadaFinance
1392bnehost.com.auBnehostingWeb Host
1393bnet-bd.comBusiness NetworkISP
1394bnet.com.brBnet TelecomISP
1395bnet.psBnet PalestineISP
1396bnl.govBrookhaven National LaboratoryGovernment
1397bnpparibas.comBNP ParibasFinance
1398bnpparibas.frBanque BNP ParibasFinance
1399bnsf.comBNSF RailwayLogistics
1400bny.comBNY MellonFinance
1401bnymellon.comBNY MellonFinance
1402boavistanet.net.brBoa Vista NetISP
1403boeing.comBoeingDefense
1404bof.fiBank of FinlandGovernment
1405bofinet.co.bwBotswana Fibre NetworksISP
1406bogazici.edu.trBogazici UniversityEducation
1407bogons.netBogonsISP
1408bohc.co.jpBenefit One Inc.Retail
1409boingo.comBoingo WirelessISP
1410boisestate.eduBoise State UniversityEducation
1411boku.ac.atUniversity of Natural Resources and Life Sciences ViennaEducation
1412bol-online.comBangladesh OnlineISP
1413bol-online.netBangladesh Online (BOL)ISP
1414bol.net.inMTNLISP
1415boldyn.comBoldynISP
1416bolignet-aarhus.dkBolignet-AarhusISP
1417bolignet.dkBolignetISP
1418boltfiber.comBOLT Fiber Optic ServicesISP
1419bombbomb.comBombBombMarketing
1420bond.edu.auBond UniversityEducation
1421bonline.com.kwGulfnet CommunicationsISP
1422bontechnologies.comBontechnologiesConsulting
1423bonterratech.comBonterraMarketing
1424booking.comBooking.comTravel
1425bookingtimes.comBookingTimesSaaS
1426bookmyname.comBookMyNameWeb Host
1427boomsolutionsve.comBoom SolutionsISP
1428boostmobile.comBoost MobileISP
1429boozallen.comBooz Allen HamiltonConsulting
1430borealisbroadband.netBorealis BroadbandISP
1431borecom.comBorecom NetworksISP
1432bornfiber.dkBornFiber Service ProviderISP
1433bosch.comBoschManufacturing
1434bosch.usBoschManufacturing
1435bosnet.seBosnet SkaraborgISP
1436boston.govCity of BostonGovernment
1437bostrad.comBostrad Supply Chain LtdLogistics
1438bosveld.co.zaBosveld CommuncationsISP
1439bounceme.netNo-IPWeb Host
1440bouyguestelecom.frBouygues TelecomISP
1441bov.comBank of VallettaFinance
1442bowdoin.eduBowdoin CollegeEducation
1443box.caWhatboxWeb Host
1444boxbroadband.co.ukCommunity Fibre (Box Broadband)ISP
1445boxhill.edu.auBOX HILL INSTITUTEEducation
1446bp.comBPIndustrial
1447bpa.govBonneville Power AdministrationUtilities
1448bplaced.combplacedWeb Host
1449bplaced.debplacedWeb Host
1450bplaced.netbplacedWeb Host
1451bpweb.netBPWEBWeb Host
1452br.digitalBR Digital TelecomISP
1453braathe.netiteam BraatheMSP
1454bracnet.netBRACNet LimitedISP
1455bradley.eduBradley UniversityEducation
1456brain.net.pkBrain TelecommunicationISP
1457brandeis.eduBrandeis UniversityEducation
1458brandenburgtel.comBrandenburg TelephoneISP
1459brandl-services.comBrandl ServicesMSP
1460branet.com.brBranetMSP
1461brasildigital.net.brBrasil Digital TelecomISP
1462brasillike.com.brBrasil LikeISP
1463brasilnet.net.brBrasilnet TelecomunicaçõesISP
1464brasiltecpar.com.brBrasil TecParISP
1465brasrede.com.brBrasRedeISP
1466bravehost.comBravenetWeb Host
1467bravenet.comBravenetWeb Host
1468braveriver.comVertikal6MSP
1469bravotelecom.comBravo TelecomISP
1470brazoria-inet.comBrazoria I-netISP
1471brazoswifi.comBrazos WiFiISP
1472brcentral.com.brBRCENTRAL TelecomISP
1473brconecta.com.brBR ConectaISP
1474breakthru.netBreakThruMSP
1475bredband2.comBroadband2ISP
1476breedbanddelft.nlStichting Breedband DelftISP
1477breezehost.ioBreezeHostWeb Host
1478breezein.netBRIZISP
1479breezeline.comBreezelineISP
1480breezelineohio.netBreezelineISP
1481bren.bgBREN Bulgarian Research and Education NetworkEducation
1482brennanit.com.auBrennan ITMSP
1483brennercom.itBrennercomISP
1484brescobroadband.comBresco BroadbandISP
1485brevo.comBrevo (Sendinblue)Marketing
1486bridgefibre.co.ukBridge FibreISP
1487bridgemaxx.comALTIUS BroadbandISP
1488bridgeport.eduUniversity of BridgeportEducation
1489bridgew.eduBridgewater State UniversityEducation
1490bridgewater.eduBridgewater CollegeEducation
1491bright.netCNIISP
1492brightok.netBrightNet OklahomaISP
1493brightridge.comBrightRidgeUtilities
1494brightsolid.comBrightsolidWeb Host
1495brightspace.comD2l BrightspaceSaaS
1496brightspeed.comBrightspeedISP
1497brightstar.ukBrightstarISP
1498brinkster.comBrinksterWeb Host
1499brisanet.com.brBrisanetISP
1500brisanet.net.brBrisianetISP
1501briteline.deBremen BritelineISP
1502britishairways.comBritish AirwaysTravel
1503britneighbour.topBritNeighbour NetISP
1504briz.uaBRIZISP
1505brking.com.brBrkingISP
1506brmaster.com.brBRMasterISP
1507brmemc.comBlue Ridge Mountain EMCUtilities
1508broadband.huOne HungaryISP
1509broadband.viBroadband VIISP
1510broadbandidc.comBROADBANDIDCWeb Host
1511broadbandsolutions.com.auBroadband Solutions AustraliaISP
1512broadbandvision.netBroadband VisionISP
1513broadcom.comBroadcom Enterprise Messaging SecurityEmail Security
1514broadinstitute.orgBroad InstituteScience
1515broadridge.comBroadridgeFinance
1516broadstar.comMDU ProISP
1517broadvoice.comBroadvoiceSaaS
1518brockport.eduSUNY BrockportEducation
1519brocku.caBrock UniversityEducation
1520brooketel.coopBrooke Telecom CooperativeISP
1521brown.eduBrown UniversityEducation
1522brownrice.comBrownrice InternetWeb Host
1523brphonia.com.brBrPhonia Provedor IpISP
1524brsk.co.ukBrskISP
1525brsnetworks.seBRS NetworksMSP
1526brsulnet.com.brBrsulnetISP
1527brsuper.com.brBRSuper (Rawnet)ISP
1528brtc.netBallard Rural TelephoneISP
1529brucepower.comBruce PowerUtilities
1530brucetelecom.comBruce TelecomISP
1531bryant.eduBryant UniversityEducation
1532brynmawr.eduBryn Mawr CollegeEducation
1533brz.gv.atBRZGovernment
1534bs-telecom.netБС-Телеком (BS-Telecom)ISP
1535bs.chCanton of Basel-StadtGovernment
1536bsc.rwBroadband Systems CorporationISP
1537bsconect.com.brBS ConectISP
1538bsd.nlBSD Software DevelopmentTechnology
1539bsd405.orgBellevue School DistrictEducation
1540bsdnetwork.com.brMHNET TelecomISP
1541bse.chSolNetISP
1542bsh.ruBusiness Sviaz HoldingMSP
1543bsnews.com.brBS NewsISP
1544bsnl.co.inBSNLISP
1545bsnl.inBSNLISP
1546bsp.com.bnBrunei Shell PetroleumIndustrial
1547bsu.eduBall State UniversityEducation
1548bt-blue.comBretagne TelecomWeb Host
1549bt.btBhutan TelecomISP
1550bt.comBTISP
1551bta.net.cnChina Networks Inter-ExchangeISP
1552btc-net.bgViacomISP
1553btc.bwBotswana TelecommunicationsISP
1554btcbahamas.comBTC Bahamas TelecommunicationsISP
1555btcentralplus.comBTISP
1556btcl.com.bdBangladesh Telecommunications CompanyISP
1557btcl.gov.bdBTCL Bangladesh TelecommunicationsISP
1558btcom.kzBTcomISP
1559btconline.netBrantley TelephoneISP
1560btelbroadband.comB-TelISP
1561btes.netBTES Bristol TennesseeUtilities
1562bth.seBlekinge Institute of TechnologyEducation
1563btk.net.plBiałogardzka Spółdzielnia MieszkaniowaReal Estate
1564btl.muBharat TelecomISP
1565btopenworld.comBTISP
1566btussel.comBug TusselISP
1567btvm.ne.jpBTVISP
1568bu.ac.krBaekseok UniversityEducation
1569bu.eduBoston UniversityEducation
1570buap.mxUniversidad Autonoma de PueblaEducation
1571buchholz-digital.deBuchholz DigitalISP
1572buckeye.comBuckeye PartnersUtilities
1573buckeyebroadband.comBuckeye BroadbandISP
1574buckeyebusiness.netBuckeye Business SolutionsMSP
1575bucknell.eduBucknell UniversityEducation
1576buenahosting.comBuena HostingWeb Host
1577buffalo.eduUniversity at BuffaloEducation
1578buffalostate.eduBuffalo State CollegeEducation
1579bugtusselwireless.comBug TusselISP
1580buildingmaterials.com.myBuilding MaterialsConstruction
1581buk.edu.ngBayero UniversityEducation
1582bulloch.netBulloch County RTCISP
1583bullseyetelecom.comBullseye TelecomISP
1584bulsat.comBulsatcomISP
1585bumblebeelinens.comBumbletree LinensRetail
1586bumrungrad.comBumrungrad International HospitalHealthcare
1587bund.deGerman Federal GovernmentGovernment
1588bunkaren.or.jpJapan Culture and Welfare Federation of Agricultural CooperativesAgriculture
1589bunnycommunications.comBunny CommunicationsISP
1590bunnytechnology.netBunny TechnologyISP
1591burlingtontelecom.comBurlington TelecomISP
1592burlingtontelecom.netBurlington TelecomISP
1593burnhamholdings.comBurnham HoldingsIndustrial
1594buroserv.net.auBrunoservISP
1595burstfire.netBurstfire NetworksISP
1596busse-computer.deBusse ComputertechnikMSP
1597busse.cloudBusse ComputertechnikMSP
1598buysecure.comMonmouth InternetWeb Host
1599buzzbroadband.comBuzz BroadbandISP
1600bv.comBlack & Veatch International CompanyConstruction
1601bvconline.com.arBVCISP
1602bvu-optinet.comBVU OptiNet (Point Broadband)ISP
1603bwi-it.deBWIDefense
1604bwireless.com.kwBWireless KuwaitISP
1605bytedance.comByteDanceTechnology
1606bytemark.co.ukBytemarkWeb Host
1607byteplus.comBytePlusIaaS
1608bytes.co.zaAltron BytesMSP
1609byu.eduBYUEducation
1610byuh.eduBrigham Young University HawaiiEducation
1611byui.eduBrigham Young University IdahoEducation
1612c-able.co.jpYamaguchi Cable VisionISP
1613c-light.netSC-REN (C-Light)Education
1614c3-complete.comC3 CompleteMSP
1615c3.kyC3 Pure FibreISP
1616c3.net.plC3 NETISP
1617c3ntro.comBicentel SA de CVISP
1618c3po3090.com.brNúcleo Brasil ServidoresWeb Host
1619ca.govState of CaliforniaGovernment
1620cabase.org.arCABASEISP
1621cable.net.coCablenetISP
1622cablebahamas.comCable BahamasISP
1623cablecable.netCable CableISP
1624cablecolor.clCablecolor (Comsat)ISP
1625cablecolor.com.gtCable ColorISP
1626cablecolor.hnCable Color HondurasISP
1627cablecom.chUPCISP
1628cablecomm.ieCableCommISP
1629cablelink.atSalzburg AGUtilities
1630cablelink.com.phCablelink PhilippinesISP
1631cablelynx.comCablelynxISP
1632cablemax.com.arCABLETEL SAISP
1633cablemel.esCablemelISP
1634cablenet.com.arCablenet ArgentinaISP
1635cablenet.com.cyCablenetISP
1636cablenett.netCablenettISP
1637cableonda.comCable OndaISP
1638cableonda.netCable OndaISP
1639cableondaoriental.comCable Onda Oriental DominicanISP
1640cableone.bizSparklightISP
1641cables.com.twYueh Feng IndustrialManufacturing
1642cabletel.com.mkA1ISP
1643cabletel.net.arCabletel (Lima Video Cable)ISP
1644cabletelevisoracolor.comCable Televisora ColorISP
1645cablevideodigitalbionik.com.arCablevideo DigitalISP
1646cablevision.atCablevision NöhmerISP
1647cablevision.comCablevisionISP
1648cablevision.net.mxIzzi TelecomISP
1649cableworld.esCableworldISP
1650cabonnet.com.brCabonnetISP
1651cabotelecom.com.brAlaresISP
1652cabq.govCity of AlbuquerqueGovernment
1653cac-cosme.comCAC CosmeBeauty
1654cachefly.comCacheFlySaaS
1655cadence.net.ukCadence NetworksISP
1656cafe.tgCAFE Informatique et telecommunicationsISP
1657cairohost.comBlack HostWeb Host
1658caiway.nlCaiwayISP
1659caiweb.com.brCaiwebISP
1660caiweb.net.brCaiwebISP
1661cal.netCal.netISP
1662calero.comCaleroMSP
1663caletavideocable.com.arCaleta Video CableISP
1664californiatelecom.comCalifornia TelecomISP
1665calligo.ioCalligo (Canada)MSP
1666calloneonline.comCall OneISP
1667calltower.comCallTowerSaaS
1668calpoly.eduCal PolyEducation
1669caltech.eduCalifornia Institute of TechnologyEducation
1670calvin.eduCalvin UniversityEducation
1671cam.ac.ukUniversity of CambridgeEducation
1672cambiahealth.comCambia Health SolutionsHealthcare
1673camintel.comCAMINTEL, National Telecommunication Provider, Phnom Penh, CambodiaISP
1674campaigner.comCampaignerMarketing
1675camtel.cmCamtelISP
1676camtel.comCameron CommunicationsISP
1677canaca.comCanacaWeb Host
1678canadianwebhosting.comCanadian Web HostingWeb Host
1679canalplustelecom.comCanal+ TelecomISP
1680canar.sdCanar Telecom SudanISP
1681canbytel.comDirectLink (Canby Telephone)ISP
1682cancer.govNational Cancer InstituteGovernment
1683cancom.comCANCOM AustriaMSP
1684cancom.deCANCOMMSP
1685canet.ne.jpImizu Cable NetworkISP
1686canisius.eduCanisius UniversityEducation
1687canl.ncCANL New CaledoniaISP
1688canon-its.co.jpCanon IT SolutionsMSP
1689canon.comCanonManufacturing
1690canonet.ne.jpCanonetMSP
1691canonical.comCanonicalTechnology
1692canspace.caCanSpaceWeb Host
1693cantecsystems.comCantec SystemsMSP
1694canterbury.ac.nzUniversity of CanterburyEducation
1695canton.eduSUNY CantonEducation
1696cantv.com.veCANTVISP
1697cape-connect.comCape Connect InternetISP
1698capetown.gov.zaCity of Cape TownGovernment
1699capgemini.comCapgeminiConsulting
1700capinfo.com.cnCAPNETGovernment
1701capita-cs.co.ukCapita Business ServicesMSP
1702capricom.co.zaCapricom NetworksISP
1703capsulaltd.ukCAPSULAWeb Host
1704captel.ruCapital TelecomISP
1705carajasnet.comRede DE Telecomunicações CarajISP
1706carandainet.com.brCN InternetISP
1707cardhealth.comCardinal HealthHealthcare
1708cardinal-health.comCardinal HealthHealthcare
1709cardinal.comCardinal HealthHealthcare
1710cardinalhealth.comCardinal HealthHealthcare
1711cardinalscriptnet.comCardinal HealthHealthcare
1712carecentrix.comCareCentrixHealthcare
1713cargill.comCargillAgriculture
1714caribserve.netCaribserve (New Technologies Group)ISP
1715carleton.caCarleton UniversityEducation
1716carleton.eduCarlton CollegeEducation
1717carnet.hrCARNETEducation
1718carnival.com.bdSystems Solutions & development TechnologiesISP
1719carnivalcorp.comCarnival CorporationTravel
1720carolinadigitalphone.comCarolina Digital PhoneISP
1721carrd.coCarrdSaaS
1722carrier-colo.comIPB Carrier-Colo BerlinWeb Host
1723carrierzone.comcarrierzoneEmail Security
1724carrytel.caCarrytelISP
1725carsforkids.orgCars For KidsNonprofit
1726cartagon.comCartagon CloudWeb Host
1727cartagotelecom.esCARTAGO TELECOM S. L.ISP
1728cas.orgChemical Abstracts ServicePublishing
1729casablanca.czCasablanca INTWeb Host
1730cascable.comCAS CableISP
1731cascadeaccess.comCascade AccessISP
1732case.eduCase Western Reserve UniversityEducation
1733casscomm.comCassCommISP
1734castrum.com.brCastrum InternetISP
1735cat-v.jpSendai CATVISP
1736cat.comCaterpillarIndustrial
1737cat.net.thNational Telecom (Thailand)ISP
1738catalyst.net.nzCatalyst.NetMSP
1739catalyst2.comTeam Blue CarrierISP
1740catalysthost.comCatalyst HostIaaS
1741catawba.eduCatawba CollegeEducation
1742catholic.eduThe Catholic University of AmericaEducation
1743catixs.comCatixsISP
1744catnet.jpHonjo CableISP
1745catonetworks.comCato NetworksSaaS
1746cats-net.co.tzCats-NetMSP
1747catv-ads.jpadvanscopeISP
1748catv296.co.jp296 Broad NetISP
1749catvmics.ne.jpMics NetworkISP
1750catvwink.co.jpWarabi Cable VisionISP
1751cau.ac.krChung-Ang UniversityEducation
1752cau.eduClark Atlanta UniversityEducation
1753cbc.caCanadian BroadcastingNews
1754cbccom.netBeijing Tian Wei Xin TongISP
1755cbctech.comCBC Tech InternationalWeb Host
1756cbe.aeCBEConstruction
1757cbn.idCBN FiberISP
1758cbr.ruBank of RussiaFinance
1759cbsimaging.comCBS ImagingRetail
1760cbsinteractive.comCBS InteractiveNews
1761cbssports.comCBS SportsEntertainment
1762cbtel.net.arCBTELISP
1763cbtp.co.idPT. Cybertechtonic PratamaWeb Host
1764cbu.caCape Breton UniversityEducation
1765cbwchc.orgCharles B. Wang Community HealthHealthcare
1766cbxnet.deCBXNETISP
1767cc9.jpCable TV Tochigi (CC9)ISP
1768ccac.eduCommunity College of Allegheny CountyEducation
1769ccapcable.comCCAP CableISP
1770ccb.comChina Construction BankFinance
1771ccc-group.comCanada Colors and Chemicals Limited (CCC)Industrial
1772ccc.co.ilTriple C Cloud ComputingWeb Host
1773ccc.deChaos Computer ClubNonprofit
1774cccd.eduCoast Community College DistrictEducation
1775cccoe.k12.ca.usContra Costa County Office of EducationEducation
1776cccomm.netCC Communications NevadaISP
1777cccs.eduColorado Community Colleges SystemEducation
1778ccinternet.czCC InternetISP
1779ccr.netCCR SolutionsMSP
1780ccs.co.krCCSISP
1781ccsd.k12.co.usCherry Creek School District #5Education
1782ccsd.netClark County School DistrictEducation
1783ccsleeds.co.ukCCS LeedsISP
1784ccsnet.ne.jpCity Cable ShunanISP
1785cct-llc.netCCTISP
1786cctv.comChina Central TelevisionNews
1787cdbhospital.comCBD HospitalHealthcare
1788cdc.govUS Centers for Disease Control and PreventionGovernment
1789cdc.uaCDC SDS-VostokISP
1790cdec.coopContinental Divide Electric CooperativeUtilities
1791cdillc.comComputer Design & Integration (CDI)MSP
1792cdkglobal.comCDK GlobalSaaS
1793cdlan.itCDLANWeb Host
1794cdm.comCDM SmithConsulting
1795cdmon.com10dencehispahardWeb Host
1796cdn77.comCDN77Web Host
1797cdnetworks.comCDNetworksSaaS
1798cdnvideo.comCDNvideoSaaS
1799cdsglobalcloud.comCDS Global CloudWeb Host
1800cdt.caCDT ConnexionMSP
1801cdt.czCD-TelematikaMSP
1802cdu.edu.auCharles Darwin UniversityEducation
1803cdw.comCDWMSP
1804ce-tel.comCETel (AXESS Networks)ISP
1805cea.frCEAGovernment
1806cec-ltd.co.jpComputer Engineering & ConsultingMSP
1807cedarnetworks.comCedar NetworksISP
1808cedia.edu.ecCEDIA Ecuador R&E NetworkEducation
1809cegecom.luCegecom LuxembourgISP
1810cegedim.frCegedimSaaS
1811cegeka.comCegekaMSP
1812cei.gov.cnChina eGovNet Information CenterGovernment
1813celcom.com.myCelcom AxiataISP
1814celeo.netCeleonetWeb Host
1815celerity.ecCelerity (Puntonet)ISP
1816celerityinternet.comGallatin Wireless InternetISP
1817celeste.frCELESTEISP
1818celito.netCelito HoWeb Host
1819cellc.co.zaCell CISP
1820cellcard.com.khCellcard CambodiaISP
1821cellcom.co.ilCellcom IsraelISP
1822cellfie.geCellfie Mobile (Veon Georgia)ISP
1823cellkabel.huCelldomolki KabeltelevizioISP
1824cello.co.nzCello GroupISP
1825cellularatsea.comCellular At SeaISP
1826celsiainternet.comCelsia InternetISP
1827celya.frCelya (Carrefour)ISP
1828cencominc.comCencomISP
1829cencora.comCencoraHealthcare
1830cenet.catholic.edu.auCEnet Catholic Education NetworkEducation
1831cengagebrain.comCengage LearningEducation
1832cenic.orgCENICNonprofit
1833cenitex.vic.gov.auCenitexGovernment
1834cenovus.comCenovus EnergyUtilities
1835cenpac.net.nrCenpac Net (Nauru)ISP
1836centene.comCenteneHealthcare
1837centerasecurity.comCentera Email DefenceEmail Security
1838centerasecurity.dkCentera Email DefenceEmail Security
1839centerpointenergy.comCenterPoint EnergyUtilities
1840centersquaredc.comCentersquare (Csquare)Web Host
1841centex.netCentral Texas TelecommunicationsISP
1842central.net.idPT. Total Info KharismaISP
1843centralaccess.comCentral AccessISP
1844centralesupelec.frCentraleSupélecEducation
1845centralinteractiva.com.mxCentral InteractivaMarketing
1846centralnet.com.brCentralNet Web ServicesIaaS
1847centralnetro.com.brCentral Net ROISP
1848centralnetsurubim.com.brCentralNetISP
1849centralnetx.com.brCentralnetISP
1850centralofertao.com.brCentral OfertãoRetail
1851centralserver.comCentral ServerIaaS
1852centralserver.com.brCentral ServerIaaS
1853centraluniversity.orgCentral University CollegeEducation
1854centranetfiber.comCentranetISP
1855centrilogic.comCentrilogicMSP
1856centrin.net.idCentrin UtamaISP
1857centrixweb.netCentrix Web ServicesWeb Host
1858centron.decentron (Optitrust)Web Host
1859century.net.brCentury TelecomISP
1860centurylink.comCenturyLinkISP
1861centurylink.com.peCirionMSP
1862centurylink.netCenturyLinkISP
1863cepanet.com.arCEPAUtilities
1864cera.netCeraNetWeb Host
1865cerberusnetworks.co.ukCerberus NetworksISP
1866cerebel.comCereBel InteractiveMarketing
1867cergis.net.idCergis NetworksISP
1868cerner.comCernerHealthcare
1869cernet.comCERNET New TechnologyISP
1870cernet.edu.cnCERNETEducation
1871cert.atCERT.at (nic.at)Email Security
1872cert.lvCERT.LVGovernment
1873certh.grCERTH Centre for Research and Technology HellasScience
1874certha.netCertha.NetISP
1875certronic.com.arCertronicSaaS
1876certronic.ioCertronicSaaS
1877certto.com.brCerttoISP
1878cesnet.czCESNETEducation
1879cesop.com.arCESOP ArgentinaISP
1880cetin.czCETINISP
1881cetin.huCETIN HungaryISP
1882cetin.rsCETINISP
1883cetinbg.bgCETIN BulgariaISP
1884ceys.com.arCEySUtilities
1885ceystel.com.arCeySTELISP
1886ceznet.czČEZNETISP
1887cfe.mxCFEUtilities
1888cfec.comCentral Florida Electric CooperativeUtilities
1889cfolks.plcyber_FolksWeb Host
1890cfu.netCedar Falls UtilitiesUtilities
1891cgates.ltCgatesISP
1892cgc.geCGC GeorgiaISP
1893cgi.comCGIConsulting
1894cgi.frCGI FranceMSP
1895cgi.seCGIConsulting
1896cgwic.comChina Great Wall Industry CorporationDefense
1897ch-lemans.frCentre Hospitalier du MansHealthcare
1898ch-saintcalais.frCentre Hospitalier du MansHealthcare
1899chaiyohosting.comChaiy oHostingWeb Host
1900chalmers.seChalmers University of TechnologyEducation
1901champlain.eduChamplain CollegeEducation
1902changethatup.comChange That UpHealthcare
1903chaparralwireless.comChaparral WirelessISP
1904chapman.eduChapman UniversityEducation
1905charlottecolo.comCharlotte ColocationWeb Host
1906charlottenc.govCity of CharlotteGovernment
1907charrytv.comComunicaciones RondaISP
1908charter.comCharterISP
1909charter.netCharterISP
1910chartercom.comCharterISP
1911chase.comChase BankFinance
1912chateauclos.comChateauclosMSP
1913chatsignal.inChat SignalISP
1914chcmed.comFamily Medicine OrlandoHealthcare
1915cheapairportparking.orgCheap Airport ParkingTravel
1916checkpoint.comCheck Point SoftwareEmail Security
1917checs.netCHECSISP
1918cheetahmail.comMarigoldSaaS
1919cheiljedang.co.krCJ CheilJedangFood
1920chello.skUPCISP
1921cheops-technology.chCheops Technology SwitzerlandMSSP
1922chereda.netCheredaISP
1923cherokeetel.comCherokee Telephone CompanyISP
1924cherryservers.comCherry ServersWeb Host
1925chesco.netChesconetEducation
1926chess.noTelia NorgeISP
1927chessict.comChess ICTISP
1928chevron.comChevronIndustrial
1929chiba-u.jpChiba UniversityEducation
1930chicago.govCity of ChicagoGovernment
1931chief.com.twAboveNet Communications Taiwan (Chief)ISP
1932chikamori.comChikamori Health Care GroupHealthcare
1933childrenscolorado.orgChildren's Hospital ColoradoHealthcare
1934childrenshospital.orgBoston Children's HospitalHealthcare
1935china-entercom.netChina Enterprise CommunicationsISP
1936chinabtn.comChina Broadcasting NetworkISP
1937chinamobile.comChina MobileISP
1938chinatelecom.cnChina TelecomISP
1939chinatelecom.com.cnChina TelecomISP
1940chinatelecomglobal.comChina Telecom Global (CTGNet)ISP
1941chinatietong.comChina TieTongISP
1942chinaunicom.cnChina UnicomISP
1943chinaunicomglobal.comChina Unicom GlobalISP
1944chinaxingye.comSuzhou Sinye Materials TechnologyIndustrial
1945chinguitel.mrChinguitelISP
1946chisholmbb.comChisholm BroadbandISP
1947chl.comCHLISP
1948chomp.orgCommunity Hospital of the Monterey PeninsulaHealthcare
1949chop.eduChildren's Hospital of PhiladelphiaHealthcare
1950chosting.solutionsCloud Hosting SolutionsWeb Host
1951chosun.ac.krChosun UniversityEducation
1952christushealth.orgCHRISTUS HealthHealthcare
1953chrobinson.comC.H. RobinsonLogistics
1954chronos.com.trChronos TeknolojiTechnology
1955chrysler.comStellantis North AmericaAutomotive
1956cht.com.twChunghwa TelecomISP
1957chu-lyon.frHospices Civils de LyonHealthcare
1958chubb.comChubbFinance
1959chubu.ac.jpChubu UniversityEducation
1960chukai.co.jpChukai TelevisionISP
1961chula.ac.thChulalongkorn UniversityEducation
1962chungbuk.ac.krChungbuk National UniversityEducation
1963chunkychips.netChunkyChips.netMSP
1964chuo-u.ac.jpChuo UniversityEducation
1965chupicom.jpChupicomISP
1966churchdev.comChurchDevWeb Host
1967ciasc.sc.gov.brCentro de Informatica e Automacao do Estado de SCGovernment
1968cibc.comCIBCFinance
1969ciberlynx.comCiberLynxTechnology
1970cica.esCICA Centro Informatico Cientifico de AndaluciaScience
1971cicese.edu.mxCICESEEducation
1972cigna.comCignaHealthcare
1973ciktel.comCIK TelecomISP
1974cilio.ioCilioSaaS
1975ciliotech.comCilioSaaS
1976cimcorp.comCimcorpIndustrial
1977cincinnatibell.comaltafiberISP
1978cineca.itCINECAScience
1979cinia.fiCiniaISP
1980cinte.com.brCINTE Telecom Comercio e ServicosISP
1981cinternetbycat.comNational TelecomISP
1982cinvestav.mxCinvestavEducation
1983cipherwave.co.zaCipherwaveISP
1984cira.caCIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements InternetISP
1985cirb.brusselsParadigm (Brussels)Government
1986cirbn.orgCIRBN Central Illinois Regional Broadband NetworkISP
1987circana.comCircanaSaaS
1988circit.deCircITMSP
1989circleamedical.comCircle A MedicalHealthcare
1990circular.decircular InformationssystemeMSP
1991cirex.ruTelecom-BirzhaMSP
1992cirrushosting.comCirrus HostingWeb Host
1993cisco.comCiscoTechnology
1994cisp.comCISP Community ISPISP
1995citadel.eduThe CitadelEducation
1996citec.com.auCITEC (Queensland Government)Government
1997citechco.netGrameen CyberNetISP
1998citelia.esCiteliaISP
1999citenet.netCitenet TelecomISP
2000citic.comCITICConglomerate
2001citictel-cpc.comCITIC Telecom CPCISP
2002citictel.comCitic Telecom International (Data)ISP
2003citigroup.comCiti (Citigroup)Finance
2004citizens.coopCitizens Telephone CooperativeISP
2005citizensfiber.comCitizens Telecommunication TechnologiesISP
2006citizensmemorial.comCitizens Memorial HospitalHealthcare
2007citra.net.idJembatan Citra NusantaraISP
2008citro.mxCitroISP
2009city-link.infoCityLinkISP
2010citycable.chLausanne SiL MultimediaISP
2011citycom-austria.comCitycom AustriaISP
2012cityemail.comCityEmailEmail Provider
2013cityfibre.comCityFibreISP
2014citylan.ruCityLanComISP
2015citylink.com.khCityLink CambodiaISP
2016citylink.proCityLink PetrozavodskISP
2017citymesh.comCitymeshISP
2018citynet.atHALLAG KommunalISP
2019citynet.kgCitynet KGISP
2020citynet.netCitynetISP
2021citynetz-halle.deMuth Citynetz HalleISP
2022cityofpaloalto.orgCity of Palo AltoGovernment
2023cityoftacoma.orgCity of TacomaGovernment
2024cityofws.orgCity of Winston-SalemGovernment
2025cityonlinebd.netCity OnlineISP
2026cityonlines.comCityOnlineISP
2027cityport.siVelcom (Cityport)ISP
2028citytelecom.ruCitytelecomISP
2029cityu.edu.hkCity University of Hong KongEducation
2030citywest.caCityWestISP
2031ciu.com.uyCámara de Industrias del UruguayNonprofit
2032civica.comCivica UKGovernment
2033civo.comCivoWeb Host
2034cizgi.net.trCizgi TelekomunikasyonISP
2035cj2.nlCJ2 HostingWeb Host
2036cjas.orgCornell Anime ClubEducation
2037cjnet4u.comCJONLINE ISP IndiaISP
2038cju.ac.krChongju UniversityEducation
2039ckt.netCraw-Kan Telephone CooperativeISP
2040ckw.chCKW Fiber ServicesISP
2041clackesd.k12.or.usClackamas Education Service DistrictEducation
2042clara.co.jpCLARA GroupMSP
2043claranet.co.ukClaranetWeb Host
2044claranet.comClaranetWeb Host
2045claremont.eduClaremont University ConsortiumEducation
2046clarix.comClarixMSP
2047clarkson.eduClarkson UniversityEducation
2048clarksvilleconnected.netClarksville Connected UtilitiesUtilities
2049clarksvillede.comClarksville Department of ElectricityUtilities
2050clarku.eduClark UniversityEducation
2051claro.com.arClaroISP
2052claro.com.brClaroISP
2053claro.com.coClaroISP
2054claro.com.doClaroISP
2055claro.com.ecClaroISP
2056claro.com.gtClaroISP
2057claro.com.peClaroISP
2058claro.net.doMail2WorldEmail Provider
2059clarochile.clClaroISP
2060claropr.comClaroISP
2061classcom.plPHU ClasscomISP
2062classicofficesystems.comClassic Office SystemsMSP
2063clausweb.roCLAUS WEB srlWeb Host
2064claytonindustries.comClayton IndustriesIndustrial
2065cldin.euYourhostingWeb Host
2066cleannet.com.brClean Net TelecomISP
2067clearaccess.co.zaClear AccessISP
2068clearfly.netClearfly CommunicationsISP
2069clearnetworx.comClearnetworxISP
2070clearpath.net.phClearPath Networks PhilippinesISP
2071clearrate.comClear Rate CommunicationsISP
2072clearwave.comClearwave FiberISP
2073clearwavefiber.comClearwave FiberISP
2074clemson.eduClemson UniversityEducation
2075clermontcountyohio.govClermont County OhioGovernment
2076cleura.comCleuraIaaS
2077clevelandclinic.orgCleveland ClinicHealthcare
2078clevernet.deClevernetISP
2079clicfacilitb.com.brClicfacil TelecomISP
2080clickip.com.brClick IPISP
2081clicknetbrasil.com.brCLICKNET BRASIL INFORMATICA E TELECOMUNICACOES LTISP
2082clicknetpe.com.brClickNet PEISP
2083clicktelecomunicacoes.com.brClick TelecomunicaçõesISP
2084clickturbo.com.brFP Telecomunicacoes (ClickTurbo)ISP
2085clientes-izzi.mxIzzi TelecomISP
2086clientes-zap-izzi.mxIzzi TelecomISP
2087climaideal.comClima IdealRetail
2088cline.itUmbrianet (Cline)ISP
2089clinicamedellin.comClínica MedellínHealthcare
2090clinique-saint-george.comPolyclinique Saint GeorgeHealthcare
2091clio.itClio (CLIOCOM)ISP
2092cliu.orgCarbon Lehigh Intermediate UnitEducation
2093clkon.netCity-LineISP
2094clodocloud.comCLODO Cloud ServiceWeb Host
2095clonix.srv.brClonix TelecomISP
2096closeness.esClosenessISP
2097cloud-mail.jpCloudMailEmail Provider
2098cloud-sec-av.comCheck Point AvananEmail Security
2099cloud-temple.comCloud TempleWeb Host
2100cloud.ruCloud.ruIaaS
2101cloud9.geCloud9Web Host
2102cloudaccess.netCloudAccess.netWeb Host
2103cloudapp.netMicrosoft AzureIaaS
2104cloudcix.comCork Internet Exchange (CloudCIX)Web Host
2105cloudddos.comCloudDDoSWeb Host
2106cloudeka.idCloudEka (Aplikanusa Lintasarta)Web Host
2107cloudezapp.ioEmailHeads.NETMarketing
2108cloudferro.comCloudFerroIaaS
2109cloudfilter.netProofpoint CloudmarkEmail Security
2110cloudfire.itCloudFireWeb Host
2111cloudfirst.hostCloudFirstWeb Host
2112cloudflare-email.comCloudflareEmail Security
2113cloudflare-email.netCloudflareEmail Security
2114cloudflare-email.orgCloudflareEmail Security
2115cloudflare-smtp.comCloudflareEmail Security
2116cloudflare-smtp.netCloudflareEmail Security
2117cloudflare-smtp.orgCloudflareEmail Security
2118cloudflare.comCloudflareSaaS
2119cloudflare.netCloudflareSaaS
2120cloudfront.netAmazon AWSTechnology
2121cloudfunctions.netGooglePaaS
2122cloudheroes.comCloud Heroes (JPC Infonet)Web Host
2123cloudhost.web.idPT Cloud Hosting IndonesiaWeb Host
2124cloudhosting.rsSBBISP
2125cloudie.hkCloudie HKWeb Host
2126clouding.ioClouding.ioWeb Host
2127clouditalia.comRetelitWeb Host
2128cloudmark.comProofpoint CloudmarkEmail Security
2129cloudscale.chcloudscale.chWeb Host
2130cloudsigma.comCloudSigmaWeb Host
2131cloudsite.buildersRad Web HostingWeb Host
2132cloudsouth.comCloud SouthWeb Host
2133cloudvalleyidc.netCloudvalley IDCWeb Host
2134cloudvpn.ioOxylabs (CloudVPN)SaaS
2135cloudwaysapps.comCloudwaysWeb Host
2136cloudwebhosting.comNameHeroWeb Host
2137cloudwm.comKamatera (CloudWM)Web Host
2138cloudzy.comCloudzyWeb Host
2139clouvider.comClouviderWeb Host
2140clovertv.jpClover TV (Nisiowari CATV)ISP
2141clp.com.hkCLP Power Hong KongUtilities
2142clsvrsystems.netGMO CloudIaaS
2143clubcorp.comClubCorpTravel
2144clubexpress.comClubExpressSaaS
2145clubnet.mzClubNetISP
2146cmaginet.comCmaginetMarketing
2147cmb.co.krCMBISP
2148cmcnetworks.netCMC NetworksISP
2149cmctelecom.vnCMC TelecomISP
2150cmich.eduCentral Michigan UniversityEducation
2151cmk.ruSeveren-Telecom (CMK)ISP
2152cmo.deCMOWeb Host
2153cmorlando.com.arCarpintería Metálica OrlandoManufacturing
2154cmsinter.netCMS InternetISP
2155cmtietong.comChina TieTongISP
2156cmu.eduCarnegie Mellon UniversityEducation
2157cmvas.co.zaCMVASMSP
2158cn.atCablevision NöhmerISP
2159cn.caCanadian National RailwayLogistics
2160cn.zp.uaTvoi Net ZaporizhzhiaISP
2161cn4e.com35.comWeb Host
2162cna.ne.jpCable Networks AkitaISP
2163cnci.co.jpCommunity Network CenterISP
2164cncm.ne.jpNagasaki Cable MediaISP
2165cndata.comChina TelecomISP
2166cni.net.idCyber Network IndonesiaISP
2167cnic.cnCNICEducation
2168cniteam.comCNIISP
2169cnnet.com.brConexao NetworksISP
2170cnnic.cnCNNICNonprofit
2171cnnic.net.cnCNNICNonprofit
2172cnservers.comCNSERVERSWeb Host
2173cnsnext.comCNS InternetISP
2174cnt.gob.ecCNT EPISP
2175cnt.ruCentral TelegraphISP
2176cntelecom.com.brCN TelecomISP
2177cntfiber.net.brCNT FiberISP
2178cnti.gob.veCNTIGovernment
2179cnu.ac.krChungnam National UniversityEducation
2180cnw.comConnect NorthwestISP
2181cnx.net.brCNX TelecomISP
2182co-mo.netCo-Mo ConnectISP
2183co.geCaucasus OnlineISP
2184coastalhosting.netcoastalhosting.netWeb Host
2185coastalwatch.comCoastalwatchEntertainment
2186coastcommunications.comCoast CommunicationsISP
2187coastconnect.comCoastConnectISP
2188cobbcounty.orgCobb County GeorgiaGovernment
2189cobranet.ngCobranetISP
2190coconet.comCoconetISP
2191cod.eduCollege of DuPageEducation
2192code200.globalcode200ISP
2193codelco.clCodelcoIndustrial
2194codetel.net.docodetel.net.doISP
2195codibee.comCodibeeSaaS
2196coeficiente.mxCoeficiente ComunicacionesISP
2197coeficiente.net.mxCoeficienteISP
2198coex.co.krCOEXMarketing
2199coextro.comCoextro OntarioISP
2200coface.comCofaceFinance
2201cofc.eduCollege of CharlestonEducation
2202cogeco.caCogecoISP
2203cogeco.comCogecoISP
2204cogeco.netCogocoISP
2205cogentco.comCogentISP
2206cognizant.comCognizantTechnology
2207coh.orgCity of Hope Medical CenterHealthcare
2208coherecyber.comCohere (Dataprise)MSSP
2209coig.plCOIGWeb Host
2210coj.netCity of JacksonvilleGovernment
2211col-network.comColnetwork C.AISP
2212colba.netColbaNetISP
2213colbd.comChittagong OnlineISP
2214colby.eduColby CollegeEducation
2215coldwater.orgColdwater Board of Public UtilitiesUtilities
2216coldwellbankerhomes.comColdwell BankerReal Estate
2217coles.com.auColesRetail
2218colgate.eduColgate UniversityEducation
2219collascrill.comCollas CrillLegal
2220collectivhosting.comCollectivWeb Host
2221collectorsaddition.comThe Collector's AdditionRetail
2222collinsaerospace.comCollins AerospaceDefense
2223colo4jax.comcolo4jaxWeb Host
2224coloblox.comColoblox Data CentersWeb Host
2225colocall.netColocall KyivWeb Host
2226colocationamerica.comColocation AmericaWeb Host
2227colocenter.nlColoCenterWeb Host
2228colocity.comColocityWeb Host
2229colocrossing.comColoCrossingISP
2230cologix.comCologixIaaS
2231cologlobal.comCologlobalWeb Host
2232colombiamas.coColombia MAS TVISP
2233colorado.eduUniversity of Colorado BoulderEducation
2234coloradocolo.comCorporate ColocationIaaS
2235coloradomtn.eduCOLORADO MOUNTAIN COLLEGEEducation
2236coloradovalley.comColorado Valley CommunicationsISP
2237colorkrew.com.brColorkrewSaaS
2238colos.kzIFC COLOSLogistics
2239colosolutions.comColo SolutionsISP
2240colosseum.comColosseum OnlineIaaS
2241colostate.eduColorado State UniversityEducation
2242coloup.comColoUpIaaS
2243colsecor.com.arColsecorISP
2244colt.netColtISP
2245coltinfo.co.ukColt InternationalManufacturing
2246columbia.eduColumbia UniversityEducation
2247columbus-networks.hnLiberty Networks HondurasISP
2248columbus-telephone.comColumbus Telephone CompanyISP
2249columbus.govCity of ColumbusGovernment
2250columbus.k12.oh.usColumbus Public SchoolsEducation
2251columbus.te.uaMAXNETISP
2252com4.com.brCom4 Data CenterWeb Host
2253com4.noCom4ISP
2254comarch.plComarchMSP
2255combell.comCombellWeb Host
2256combolivre.net.brConnection MultimidiaISP
2257comcap.nlWorldStream LATAM (Comcap)Web Host
2258comcare.gov.auComcareGovernment
2259comcast.comComcastISP
2260comcast.netComcastISP
2261comcastbusiness.netComcast BusinessISP
2262comcel.com.coClaro ColombiaISP
2263comcell.netCOMCELLISP
2264comclark.comComClarkISP
2265comcor.ruAKADO TelecomISP
2266comelecservices.comComelec ServicesISP
2267comentum.comComentumTechnology
2268comerica.comComericaFinance
2269comeser.itComeserISP
2270comfori.comComforiSaaS
2271comfortel.proComfortelISP
2272comline.comWest Coast Internet (WCI)ISP
2273comm1net.netComm1ISP
2274commbank.com.auCommonwealth Bank of AustraliaFinance
2275commerce.govUS Department of CommerceGovernment
2276commerzbank.comCommerzbankFinance
2277commnetbroadband.comCommnet BroadbandISP
2278commnetwireless.comCommnet WirelessISP
2279commonspirit.orgCommonSpirit HealthHealthcare
2280commonwealthu.eduCommonwealth University of PennsylvaniaEducation
2281comms365.comComms365ISP
2282commscope.comCommScope TechnologiesISP
2283commu.catCommuISP
2284communilink.comCommuniLinkWeb Host
2285communilink.netCommuniLinkWeb Host
2286communitect.comSolutionreachSaaS
2287communityfibre.co.ukCommunity FibreISP
2288communitymedical.orgCommunity Medical CentersHealthcare
2289comnet.bgComnet BulgariaISP
2290comnet.net.idComtronics SystemsMSP
2291comnet.uzИнтернет провайдер ComnetISP
2292comnett.com.brComnett Provedor de InternetISP
2293comnica.huComnicaSaaS
2294compass.net.nzCompass NZISP
2295complat.ruKomplatISP
2296complemar.comComplemarLogistics
2297completecomputers.ccComplete ComputersMSP
2298compliancearchitects.netCompliance AarchitectsHealthcare
2299compliancewebinars.comComplianceWebinarsEducation
2300comporium.comComporiumISP
2301compu-type.netCompu-TypeMSP
2302compucreations.comMalta Internet FoundationISP
2303compudyne.netCompudyneMSP
2304compusource.netInternet Solution, CompuSOURCEISP
2305compusystems.comCompuSystemsSaaS
2306computacenter.comComputacenterMSP
2307computerdoctor-usa.comThe Computer DoctorMSP
2308computerguyz.caComputer GuyzMSP
2309computerline.chComputerlineMSP
2310computerstlouis.comComputer St. LouisMSP
2311computronics.comComputronicsTechnology
2312comsats.net.pkCOMSATS Internet ServicesISP
2313comsol.co.zaComsol NetworksISP
2314comsouth.netComSouthISP
2315comsysghana.comComsys GhanaISP
2316comteco.com.boComtecoISP
2317comtel.co.zaComtel CommunicationsISP
2318comtrance.netcomtranceWeb Host
2319comune.livorno.itCittà di LivornoGovernment
2320comune.novara.itComune di NovaraGovernment
2321comunitel.netVodafoneISP
2322comvive.esComviveWeb Host
2323comwave.netComwave (Rogers)ISP
2324conapto.seConaptoWeb Host
2325conceitosinformatica.com.brConceitos NetISP
2326concentrix.comConcentrixMSP
2327concordia.caConcordia UniversityEducation
2328concurcompleat.comConcur CompleatSaaS
2329concursolutions.comSAP ConcurSaaS
2330condosites.comCondoSitesSaaS
2331condosites.netCondoSitesSaaS
2332conduent.comConduentMSP
2333conecta-3.esFIBRA A LA PORTAISP
2334conecta.psi.brConecta NetISP
2335conectainternetbandalarga.net.brConecta SoluçõesISP
2336conectetelecomba.com.brConecte TelecomISP
2337conectio.plKujawsko-Pomorskie Centrum Kompetencji CyfrowychGovernment
2338conectix.euConectixISP
2339conectmais.comConectMaisISP
2340conectnet.netConectNetISP
2341conectprime.net.brConect Prime (RG Silveira)ISP
2342conectrj.com.brConect InternetISP
2343conecttelecom.com.brConnect TelecomISP
2344conectv.com.brConectvISP
2345conectvirtua.com.brConect VirtuaISP
2346conestogac.on.caConestoga CollegeEducation
2347conexaoi9.com.brConexão I9ISP
2348conexiaworld.comConexiaISP
2349conexiondigitalsas.netConexión DigitalISP
2350conexonconnect.comConexon ConnectISP
2351congotelecom.cgCongo TelecomISP
2352conncoll.eduConnecticut CollegeEducation
2353connect.net.lbConnectISP
2354connect.net.pkConnect Communications PakistanISP
2355connect10.com.brConnect 10ISP
2356connecta.netconnecta agISP
2357connectalagoas.com.brConnect AlagoasISP
2358connectatelecom.netConnecta TelecomISP
2359connectctc.comConsolidated Telephone (CTC)ISP
2360connected.plConnectedISP
2361connectel.com.pkConnecTel PakistanISP
2362connectfibre.co.ukConnect FibreISP
2363connectingproject.itConnecting ProjectISP
2364connectit.com.auConnect I.T.MSP
2365connectivia.itConnectiviaISP
2366connectmax.com.brAlgar Mogi (ConnectMax)ISP
2367connectria.comConnectriaWeb Host
2368connectrio.com.brConnect RioISP
2369connectsul.com.brConnectsulISP
2370connectto.comConnectTo CommunicationsISP
2371connectwave.co.krConnectWaveSaaS
2372connectworld.psi.brConnect World TelecomISP
2373connectzone.inConnect BroadbandISP
2374connesi.itConnesiISP
2375connexin.co.ukConnexinGovernment
2376connextelecom.com.brConnex FibraISP
2377conocophillips.comConocoPhillipsIndustrial
2378conoha.ne.jpConoHaWeb Host
2379conova.comconova communicationsWeb Host
2380conrad.nycConradITMSP
2381consideredcreative.comConsidered CreativeMarketing
2382consilio.comConsilioLegal
2383consol.comConsolidated Edison (ConEd)Utilities
2384consolidated.comFidium FiberISP
2385consolidated.coopConsolidatedUtilities
2386consolidatedlabel.comConsolidated LabelPrint
2387consolidatednd.comConsolidated TelcomISP
2388consolidatedsmart.comSmartaira (Consolidated Smart Systems)ISP
2389constant.comVultrWeb Host
2390constantcontact.comConstant ContactMarketing
2391constellation.comCONSTELLATION ENERGY GENERATIONUtilities
2392consultix.netConsultixMSP
2393consumermedsafety.orgInstitute for Safe Medication PracticesHealthcare
2394consumeroptions.co.keConsumer OptionsConsulting
2395contabo.comContaboWeb Host
2396contaboserver.netContaboWeb Host
2397contactconsumers.comContact ConsumersMarketing
2398contato.netContato InternetISP
2399contegix.comContegixWeb Host
2400contell.ruContellIaaS
2401continent8.comContinent 8Web Host
2402continum.netContinumWeb Host
2403convention.co.jpJapan Convention ServicesMarketing
2404converged.co.ukConverged Communication SolutionsISP
2405converged.co.zaConverged TelecomsISP
2406convergeict.comConvergeISP
2407convergencegroup.co.ukConvergence GroupISP
2408convergent-interfreight.comConvergent InterfreightLogistics
2409convergentindia.comConvergent WirelessMSP
2410convergentwireless.comConvergent WirelessMSP
2411convergenze.itConvergenzeISP
2412convergeone.comC1 (ConvergeOne)MSP
2413convergia.ioConvergiaISP
2414convivial.ne.jpConvivialNetISP
2415convoso.comConvosoSaaS
2416convotis.chCONVOTIS SwissIaaS
2417conwaycorp.comConway CorpISP
2418conxion.netConXion EUWeb Host
2419cooksonhillsconnect.comCookson Hills ConnectISP
2420coolhousing.netCoolhousingWeb Host
2421coolideas.co.zaCool IdeasISP
2422coollink.ngSteam Broadcasting and CommunicationsMSP
2423coolwavecom.comCoolwave CommunicationsISP
2424cooolbox.bgCooolboxISP
2425coopelesca.comCooperativa de Electrificación Rural de San Carlos R.L.ISP
2426coopenet.com.arCoopenetISP
2427cooperatelecom.com.brCoopera TelecomISP
2428cooperativenet.comCooperative CommunicationsISP
2429coopmorteros.comCooperativa MorterosUtilities
2430cooptel.qc.caCooptelISP
2431cooptl.com.arCooperativa Eléctrica Trenque LauquenUtilities
2432cooptortu.com.arCooperativa de TortuguitasISP
2433coosavalleytech.comCoosa Valley TechnologiesISP
2434coovilros.comCoovilrosISP
2435copaco.comCopaco CloudWeb Host
2436copaco.com.pyCopacoISP
2437copelnet.com.arCopelco (Cutral-Co)Utilities
2438copetel.net.arCooperativa Telefónica Carlos TejedorISP
2439copreltelecom.com.brCoprel TelecomISP
2440coprosys.czCoprosysISP
2441coquitlam.caCity of CoquitlamGovernment
2442coral-telecom.comCoral TelecomISP
2443corbina.netBeelineISP
2444corbina.ruPJSC VimpelComISP
2445corbina.uaCorbina TelecomISP
2446corblock.comCorblockIndustrial
2447cordialmail.netCordialMarketing
2448core-backbone.comCore-BackboneISP
2449coreit.seAderian CoreITMSP
2450coreix.netCoreixWeb Host
2451corenetcloud.comCORENETCLOUDWeb Host
2452corephp.comcorePHPMarketing
2453coreserver.jpCORESERVERWeb Host
2454coresite.comCoreSiteWeb Host
2455corespace.comCoreSpaceWeb Host
2456coreweave.comCoreWeaveIaaS
2457corewellhealth.orgCorewell HealthHealthcare
2458coriolis-telecom.frCoriolis TelecomISP
2459cornell.eduCornell UniversityEducation
2460cornellcollege.eduCornell CollegeEducation
2461cornerstoneondemand.comCornerstoneSaaS
2462corp-email.comShanghai Qingyu Computer TechnologyEmail Security
2463corpiconet.com.arCORPICOISP
2464corporativa.com.brCorporativa TelecomunicaçõesISP
2465corporativafiber.com.brCorporativa FiberISP
2466correo.gob.esSpanish Ministry of Digital TransformationGovernment
2467cortland.eduSUNY CortlandEducation
2468cosmicguard.comCosmic Global NetworksISP
2469cosmonova.netCosmonovaISP
2470cosmopolitanlasvegas.comThe Cosmopolitan of Las VegasTravel
2471cosmos-telecom.byCosmos TVISP
2472cosmos.ruCosmos (Russia)ISP
2473costalogistica.comCosta LogísticaLogistics
2474costco.comCostco WholesaleManufacturing
2475cot.netCal-Ore TelephoneISP
2476cotapnet.com.boCOTAPISP
2477cotas.comCotasISP
2478cotas.com.boCotasISP
2479cotea.com.arCOTEAISP
2480cotecal.com.arCotecalISP
2481cotel.boCotelISP
2482cotel.com.arCotel Villa GesellISP
2483cotelcam.com.arCotelcam ArgentinaISP
2484cotesma.coopCotesma San Martin de los AndesISP
2485cotton-warehouse.comCotton Warehouse Classic CarsAutomotive
2486coucou-networks.frFree MobileISP
2487countrycom.ruAO CountrycomISP
2488countrywireless.comCountry WirelessISP
2489countybroadband.co.ukCounty BroadbandISP
2490countyofriverside.usCounty of RiversideGovernment
2491courierplus.netCourier PlusLogistics
2492covage.comCovageISP
2493covenantuniversity.edu.ngCovenant UniversityEducation
2494covermymeds.comCoverMyMedsHealthcare
2495cox.comCox CommunicationsISP
2496cox.netCox CommunicationsISP
2497coxenterprises.comCox EnterprisesConglomerate
2498cp247.netM247Web Host
2499cpa1040.comCPA 1040Finance
2500cpanelhost.clcPanelHostWeb Host
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