diff --git a/parsedmarc/resources/maps/base_reverse_dns_map.csv b/parsedmarc/resources/maps/base_reverse_dns_map.csv
index 7e2ead0..a97f6b0 100644
--- a/parsedmarc/resources/maps/base_reverse_dns_map.csv
+++ b/parsedmarc/resources/maps/base_reverse_dns_map.csv
@@ -1,688 +1,828 @@
-base_reverse_dns,name,type
-1e100.net,Google,Technology
-2tay.kz,2DAY Telecom LLP,ISP
-a2hosting.com,A2Hosting,Web Host
-ab-group.biz,AsiaBell,ISP
-acelerate.net,AXS Bolivia S. A.,ISP
-activegate-ss.jp,Active! gate SS,Email Security
-admintek.net,Admintek,Web Host
-admintekcr.net,Admintek,Web Host
-adnsl.com,ADN Telecom,ISP
-adventconstructions.co.tz,Advent Construction Limited,Industrial
-aeroinc.net,The Areo Group,Industrial
-aeza.network,Aeza,Web Host
-afghan-wireless.com,Afgan Wireless,ISP
-af-k.de,I-NetPartner GmbH,ISP
-aichi-colony.jp,Aichi Developmental Disability Center,Healthcare
-aigmedical.com,Affiliates in Gastroenterology,Healthcare
-aila.org,American Immigration Lawyers Association,Nonprofit
-airtel.co.zm,Airtel,ISP
-airtelbroadband.in,Airtel,ISP
-ajusa.com,AJ-USA,Retail
-aknet.kg,AkNet,ISP
-albatros.uz,Albatros Health Care,Healthcare
-alembic.co.in,Alembic Pharmaceuticals,Healthcare
-alestra.net.mx,Alestra,ISP
-alpha-prm.jp,Otsuka Corporation,ISP
-altel.kz,Atel,ISP
-altmanadvisors.com,Altman Advisors,Finance
-amazonses.com,Amazon SES,SaaS
-ambisys.net,Ambisys,Healthcare
-americanam.org,American Advanced Management,Healthcare
-amethyst.co.jp,Amethyst,Healthcare
-antelecom.net,Antelecom,ISP
-antispamcloud.com,N-able,Email Security
-antispameurope.com,Hornetsecurity,Email Security
-applicationx.net,Application X,MSP
-appriver.com,OpenText AppRiver,Email Security
-aqmhost.net,AqmHost,Web Host
-aragon.es,Government of Aragon,Government
-archerirm.us,RSA Archer GRC,SaaS
-arizona.edu,University of Arizona,Education
-arpinet.am,Arpinet,ISP
-aruba.it,Aruba.it.,Web Host
-asahikawa-med.ac.jp,Asahikawa Med,Healthcare
-ashtelstudios.com,Ashtel Studios,Healthcare
-askbis.com,"BIS, Inc.",Web Host
-assentportal.com,Assent,SaaS
-atmailcloud.com,atmail,Email Provider
-ats.ca,ATS Healthcare,Healthcare
-atw.ne.jp,ATW,Web Host
-aviso.ci,Orange,ISP
-axtel.net,Axtel,ISP
-azeronline.com,Azeronline,ISP
-azteca-comunicaciones.com,Aztec Communications Columbia,ISP
-barracuda.com,Barracuda,Email Security
-bayada.com,BAYADA Home Health Care,Healthcare
-bayer.de,Bayer,Healthcare
-bbtel.com,BBTEL,ISP
-bcs.org,BCS,Nonprofit
-beaumont.org,Corewell Health (Formerly Beaumont),Healthcare
-bell.ca,Bell Canada,ISP
-bell.net,Bell Canada,ISP
-bigcommerce.net,BigCommerce,SaaS
-bisv.ru,Bisv.ru,ISP
-blacknight.com,Blacknight Solutions,Web Host
-bluehost.com,Bluehost,Web Host
-bluemission.net,Blue Mission,Web Host
-bluetie.com,BlueTie,MSP
-bohc.co.jp,Benefit One Inc.,Retail
-bracnet.net,BRACNet Limited,ISP
-bravehost.com,Bravenet,Web Host
-bravenet.com,Bravenet,Web Host
-braveriver.com,Brave River,MSP
-breezelineohio.net,Breezeline,ISP
-brinkster.com,Brinkster,Web Host
-bulsat.com,Bulsatcom,ISP
-burnhamholdings.com,Burnham Holdings,Industrial
-buroserv.net.au,Brunoserv,ISP
-calero.com,Calero,MSP
-calpoly.edu,Cal Poly,Education
-canonet.ne.jp,Canonet,MSP
-cardinalhealth.com,Cardinal Health,Healthcare
-carrierzone.com,carrierzone,Email Security
-ccc-group.com,Canada Colors and Chemicals Limited (CCC),Industrial
-celeste.fr,CELESTE,ISP
-centerasecurity.dk,Centera Email Defence,Email Security
-centerasecurity.com,Centera Email Defence,Email Security
-centralinteractiva.com.mx,Central Interactiva,Marketing
-centurylink.com.pe,Cirion,MSP
-charter.net,Charter,ISP
-chikamori.com,Chikamori Health Care Group,Healthcare
-chinamobile.com,China Mobile,ISP
-chinaunicom.cn,China Unicom,ISP
-chinaxingye.com,"Suzhou Sinye Materials Technology Co., Ltd.",Industrial
-cimcorp.com,Cimcorp,Industrial
-circleamedical.com,Circle A Medical,Healthcare
-cirrushosting.com,Cirrus Hosting,Web Host
-ckt.net,Craw-Kan Telephone Cooperative,ISP
-claro.net.do,Mail2World,Email Provider
-clearwave.com,Clearwave Fiber,ISP
-clemson.edu,Clemson University,Education
-climaideal.com,Clima Ideal,Retail
-cloudfilter.net,Proofpoint Cloudmark,Email Security
-cloudflare.net,Cloudflare,SaaS
-cloudflare-email.net,Cloudflare,Email Security
-cloud-sec-av.com,Check Point Avanan,Email Security
-cloudwaysapps.com,Cloudways,Web Host
-cniteam.com,CNI,ISP
-colocrossing.com,ColoCrossing,ISP
-comcast.net,Comcast,ISP
-comcastbusiness.net,Comcast Business,ISP
-communitect.com,Solutionreach,SaaS
-concursolutions.com,SAP Concur,SaaS
-condosites.net,CondoSites,SaaS
-conoha.ne.jp,ConoHa,Web Host
-constantcontact.com,Constant Contact,Marketing
-contaboserver.net,Contabo,Web Host
-corbina.ru,PJSC VimpelCom,ISP
-cornell.edu,Cornell University,Education
-cox.net,Cox Communications,ISP
-cp247.net,M247,Web Host
-cpi.ad.jp,CPI,Web Host
-cpsinet.com,TruBridge,Healthcare
-creehan.com,Inovalon (Formerly Creehan & Company),Healthcare
-csloxinfo.com,CSL,MSP
-csod.com,Cornerstone,SaaS
-ctbcbank.com.ph,CTBC Bank (Philippines) Corp.,Finance
-cuenote.jp,Cuenote,SaaS
-cvent-planner.com,Cvent,SaaS
-cvtsv.com,Cvent,SaaS
-cwru.edu,Case Western Reserve University,Education
-cyberlynk.net,CyberLynk,MSP
-cybermail.jp,CyberMail,Email Provider
-d2s.cloud,d2s.cloud,Web Host
-daemonmail.ner,DaemonMail,Email Provider
-dailyinvesthub.com,Daily Invest Hub,Finance
-damel.com,Damel Group,Food
-ddccommunications.com,DDC public affairs,Marketing
-default-host.net,INHOSTED LP,Web Host
-delhitel.net,Delhi Telephone Company,ISP
-dexanet.co.id,Dexanet,ISP
-dhl.com,DHL,logistics
-diakovere.de,DIAKOVERE,Healthcare
-digitalairstrike.com,Digital Air Strike,Marketing
-digiturunc.com,Digiturunc,Web Host
-dimenoc.com,"HostDime.com, Inc.",Web Host
-directnic.net,Directnic.com,Web Host
-directwifi.com.br,Direct Internet,ISP
-disenosweb.mx,Hive Studio,Web Host
-dlivry.co,Twilio SendGrid,Marketing
-dosscloudservices.com,Doss Business Systems,MSP
-doteasy.com,Doteasy,Web Host
-dotroll.com,DotRoll,Web Host
-dreamhost.com,Dreamhost,Web Host
-dreamhostps.com,Dreamhost,Web Host
-dvcotechnology.com,Cision,Marketing
-e2ma.net,Emma,Marketing
-eastlink.ca,Eastlink,ISP
-easydns.com,easyDNS,Web Host
-eboundhost.com,eBoundhost,Web Host
-echolabs.net,Echo Labs,MSP
-edgepark.com,Edgepark,Healthcare
-eduneering.com,UL EHS training,SaaS
-eigbox.net,Newfold Digital,Web Host
-elcat.kg,ElCat,ISP
-elink.net,Earthlink,ISP
-emailarray.com,Emailarray,Email Provider
-emailservice.io,Mailprotector,Email Security
-emailsrv.net,Mailprotector,Email Security
-emailsrvr.com,Rackspace Email,Email Security
-encrypttitan.net,EncryptTitan,Email Security
-enguard.com,EnGuard,Email Security
-entrata.com,Entrata,SaaS
-epicura.be,EpiCURA,Healthcare
-erie.gov,"Erie County, New York",Government
-erlabrunn.de,Kliniken Erlabrunn,Healthcare
-ertelecom.ru,ER-Telecom,ISP
-etc.uz,East Telecom,ISP
-etipres.com,ETIPRES,Print
-etouches.com,Stova,SaaS
-eventsairmail.com,EventsAir,SaaS
-evertecinc.com,Evertec,Finance
-evertecpr.com,Evertec,Finance
-exacthosting.com,Exact Hosting,Web Host
-exactt.com,Salesforce Marketing Cloud (Formerly ExactTarget),Marketing
-exacttarget.com,Salesforce Marketing Cloud (Formerly ExactTarget),Marketing
-expedia.net,Expedia,Travel
-ezorg.nl,E-Zorg,Healthcare
-fastnet.kg,FastNet,ISP
-fastspeed.dk,Fastspeed,ISP
-fedex.com,FedEx,Logistics
-fiberhub.com,FiberHub,ISP
-fireeyecloud.com,FireEye,Email Security
-fireeyegov.com,FireEye (Government),Email Security
-firstcloudsecurity.net,CyberCision,Email Security
-fisherpaykel.com,Fisher & Paykel,Retail
-flinnsci.com,Flinn Scientific,Healthcare
-flywheelsites.com,Flywheel,Web Host
-fmu.ac.jp,Fukushima Medical University,Education
-formassembly.com,FormAssembly,SaaS
-forthnet.gr,Nova,ISP
-fortimail.com,Fortinet FortiMail,Email Security
-forwardemail.net,ForwardEmail.net,Email Provider
-fourseasonspediatrics.com,Four Seasons Pediatrics,Healthcare
-franchisemail.net,FranConnect,SaaS
-freehostia.com,Freehostia,Web Host
-fujita-hu.ac.jp,Fujita Health University,Healthcare
-fuse.net,Altafiber (Formerly Cincinnati Bell),ISP
-fusionconnect.com,Fusion Connect,MSP
-gandi.net,Gandi.net,Web Host
-gastrogainesville.com,Gastroenterology Associates of Gainesville,Healthcare
-gci.net,GCI,ISP
-gen2fund.com,Gen II,Finance
-ghm-grenoble.fr,Groupe hospitalier mutualiste de Grenoble,healthcare
-globalit.com,Global IT,MSP
-gmu.edu,George Mason University,Education
-gmx.com,GMX,Email Provider
-google.com,Google (Including Gmail and Google Workspace),Email Provider
-gosecure.net,GoSecure,Email Security
-goskope.com,Netskope,Email Security
-gov.in,Indian government,Government
-gpphosted.com,Proofpoint (Government),Email Security
-grainger.ca,Grainger Industrial Supply,Industrial
-grainger.com,Grainger Industrial Supply,Industrial
-graysmark.net,Graysmark Business Systems,MSP
-gsbridge.com,Golden State Bridge,Industrial
-gtnexus.com,Infor Nexus (Formerly GT Nexus),SaaS
-gwu.edu,The George Washington University,Education
-hanami.run,Mailwip (Formerly Hanami),Email Provider
-hanastar.net.id,HSnet,ISP
-harvard.edu,Harvard University,Education
-healthall.com,UC Health,Healthcare
-healthcaresupplypros.com,Healthcare Supply Pros,Healthcare
-healthproductsforyou.com,Health Products For You,Healthcare
-helpscout.net,Help Scout,SaaS
-heywoodhill.com,Heywood Hill,Retail
-hickorytech.net,Consolidated Communications,ISP
-highspot.com,Highspot,Marketing
-hinet.net,HiNet,ISP
-h-isac.org,H-ISAC,Healthcare
-hokudai.ac.jp,Hokkaido University,Education
-hostedemail.com,HostedEmail.com,Email Provider
-hosting.ie,Irish Domains Limited,Web Host
-hosting-mexico.net,Hosting-Mexico,Web Host
-hostmonster.com,Hostmonster,Web Host
-hostneverdie.com,Hostneverdie,Web Host
-hostresolver.net,Stack Harbor,Web Host
-hosts.co.uk,Namesco Limited,Web Host
-hostsevenplus.com,HostSevenPlus,Web Host
-hostwindsdns.com,Hostwinds,Web Host
-hotnet.net.il,Hot Net Internet Services,ISP
-htc.net,HTC,ISP
-htmlservices.it,HTMLServices.it,MSP
-hubspotemail.net,HubSpot,Marketing
-hughston.com,Hughston Clinic,Healthcare
-hvvc.us,Hivelocity,Web Host
-ice.co.cr,Grupo ICE,Industrial
-ideaservers.net,Hetzner,Web Host
-idig.net,Canadian Web Hosting,Web Host
-iglou.com,IgLou Internet Services,ISP
-ilap.com,ILAP,ISP
-improvmx.com,ImprovMX,Email Provider
-indemed.com,Cardinal Health at-home (Formerly Independence Medical),Healthcare
-infolink.ru,Infolink,ISP
-inforcloudsuite.com,Infor,SaaS
-inkyphishfence.com,INKY,Email Security
-inmotionhosting.com,InMotion Hosting,Web Host
-innovasur.com,Innovasur,MSP
-inspiren.my,Inspiren,Marketing
-instantprint.com,Instant Print Corp,Print
-inxserver.de,Inxmail,Marketing
-ionblade.com,IonBLADE,Web Host
-iphmx.com,Cisco Cloud Email Security (CES),Email Security
-iphotel.net.br,IPHOTEL Hospedagem de Sites LTDA,Web Host
-iphouse.net,ipHouse,Web Host
-iqhive.com,IQ Hive,MSP
-ispgateway.de,domainfactory GmbH,Web Host
-isplevel.pro,ISPLevel,Web Host
-ispn.net,ISPN,MSP
-issr.ru,Mobile TeleSystems,ISP
-itscom.net,iTSCOM,IPS
-iwashiya-nagai.co.jp,"Iwashiya Nagai Co., Ltd.",Healthcare
-jikei.ac.jp,The Jikei University,Education
-johnshopkins.edu,Johns Hopkins University,Education
-jweiland12.net,domainfactory GmbH,Web Host
-kagoya.net,KAGOYA,Web Host
-kalittacharters.com,Kalitta Charters,Logistics
-kcell.kz,Kcell,ISP
-kcn.ne.jp,KCN,ISP
-kddi.ne.jp,KIDDI,ISP
-kendall.cz,"GPS Praha, s.r.o.",Healthcare
-kennesawtrans.com,Kennesaw Transportation,Logistics
-kingswoodfacadesthailand.com,Kingswood Facades Thailand,Industrial
-kirkbrothers.com,Kirk Brothers Supercenter,Automotive
-klinik-arlesheim.ch,Klinik Aresheim,Healthcare
-kmtn.ru,Kostrom City Telephone Network,ISP
-knet.kg,Kyrgyztelecom,ISP
-kobe-u.ac.jp,Kobe University,Education
-kodiaksys.com,ARIOS,SaaS
-kovacmed.com,KOVAC-MED,Healthcare
-kreativemachinez.tech,Kreative Machinez,Marketing
-kryptronic.com,Kryptronic,SaaS
-ktc.kz,KTC Kazakhstan LLP,Industrial
-kundenserver.de,domainfactory GmbH,Web Host
-l3harris.com,L3Harris,Defense
-larrycomputerguy.com,Larry The Computer Guy,MSP
-lauruslabs.com,Lasarus Labs,Healthcare
-lb.go.gov.br,Government of Goias State Brasil,Government 
-lcmh.com,Lake Charles Memorial Health System,Healthcare
-lestetelecom.com.br,Leste,ISP
-lghealth.org,Penn Medicine Lancaster General Health,Healthcare
-link3.net,Link3 Technologies,ISP
-linkedin.com,LinkedIn,Social Media
-live-servers.net,Fasthosts Internet Ltd,Web Host
-locaweb.com.br,Locaweb,Web Host
-logix.in,Logix InfoSecurity,MSP
-lpn.co.th,L.P.N. Development PCL,Real Estate
-lstn.net,Limestone Networks,Web Host
-luxsci.com,LuxSci,Email Security
-m9network.com,Volico Data Centers,Web Host
-mail.ru,Mail.ru,Email Provider
-mail2world.com,Mail2World,Email Provider
-mailbaby.net,Mail Baby,Email Security
-mailchannels.net,MailChannels,Web Host
-mailcontrol.com,Forcepoint,Email Security
-mailgun.info,Mailgun,SaaS
-mailgun.net,Mailgun,SaaS
-mailgun.us,Mailgun,SaaS
-mailhop.org,DuoCircle,Email Security
-mailhostbox.com,Unified Layer,Web Host
-mailinblack.com,Mailinblack,Email Security
-mailplug.co.kr,Mailplug,Email Provider
-mailplug.com,Mailplug,Email Provider
-mailroute.net,MailRoute,Email Security
-mailsecure.jp,"NTTPC Communications, Inc.",Email Security
-mailspamprotection.com,SiteGround,Web Host
-mandrillapp.com,Mailchimp Transactional,SaaS
-mark-itt.net,Point Internet,ISP
-marriott-service.com,Marriott,Travel
-materprivate.ie,Mater Private Network,Healthcare
-maxaninteirorsystems.com,Maxan Interior Systems,Industrial
-maximtech.com,Maximtech,Web Host
-maxnet.ua,Maxnet,ISP
-mccooknet.com,McCookNet,Web Host
-mcdlv.net,Intuit Mailchimp,Marketing
-mchsi.com,MediacomCable,ISP
-mcsv.net,Intuit Mailchimp,Marketing
-me.com,Apple iCloud,Email Provider
-medline.com,Medline,Healthcare
-mega.kg,Maga-Line,ISP
-mega.kg,Mega-Line,ISP
-megacom.kg,MegaCom,ISP
-megamailservers.com,MegaMailServers,MSP
-mercranet.com,Mercranet,Web Host
-mercurygate.net,MercuryGate,SaaS
-messagelabs.com,Symantec Email Security,Email Security
-messagingengine.com,Fastmail,Email Provider
-mesvr.com,ReadNotify,Email Provider
-metricsthatmatter.com,Metrics That Matter,SaaS
-mho.de,Marienhospital Osnabrück,Healthcare
-mhos.de,Marienhospital Osnabrück,Healthcare
-miamioh.edu,Miami University,Education
-mia.net,HostDrive,Web Host
-microsoft.com,Microsoft,Technology
-mimecast.com,Mimecast,Email Security
-mit.edu,MIT,Education
-mktomail.com,Marketo,Marketing
-mmrs.jp,Mirai Communication Network Inc.,Web Host
-modenesegastone.com,Modenese Gastone,Retail
-molalla.net,Molalla Communications,ISP
-moniker.com,Moniker,Web Host
-moovik.com.ua,MooVik,Retail
-movitel.co.mz,Movitel,ISP
-msgexch.com,Constant Contact,Marketing
-mtaroutes.com,N-able,Email Security
-mtasv.net,Postmark,SaaS
-mts.ru,MTS,ISP
-mtu-net.ru,Mobile TeleSystems,ISP
-mwprem.net,NTT,ISP
-mx.net,Silversky,Email Security
-mxrecord.io,Area 1 Email Security,Email Security
-mxrecord.mx,Area 1 Email Security,Email Security
-mxroute.com,MXroute,Email Provider
-mydsomanager.com,My DSO Manager,SaaS
-mymts.net,Bell MTS,ISP
-mysecurecloudhost.com,World Host Group,Web Host
-my-tss.com,Performive,MSP
-mywhc.ca,Web Hosting Canada,Web Host
-myworkday.com,Workday,SaaS
-nagoya-cu.ac.jp,Nagoya City University,Education
-nagoya-u.ac.jp,Nagoya University,Education
-nahealth.com,Northern Arizona Healthcare,Healthcare
-name.com,Name.com,Web Host
-nano.uz,Nano Telecom,ISP
-naviexp.jp,NaviExp,MSP
-nbcb.cn,Bank of Ningbo,Finance
-needles.co.kr,Tae Chang Industrial,Healthcare
-netdesignhost.com,"Netdesign Group Co.,Ltd.",Web Host
-netfinn.net,netFinn,Web Host
-netrevolution.com,NetRevolution,ISP
-netroad.ru,Mobile TeleSystems,ISP
-netsolus.com,netsolus KC,MSP
-net-uno.net,"Net Uno, C.A.",ISP
-newsunseo.com,NewSunSEO,Marketing
-newtekwebhosting.com,Newtek Technology Solutions,Web Host
-ngpweb.com,Bonterra,Marketing
-nhisac.org,H-ISAC,Healthcare
-nicmail.ru,RU-CENTER,Email Provider
-nifty.com,@nifty,Web Host
-niigata-u.ac.jp,Niigata University,Education
-nititancommercial.com,Niti Tan Commercial,Industrial
-nordstrom.com,Nordstrom,Retail
-northwestern.edu,Northwestern University,Education
-novotelecom.ru,Novo Telcom,ISP
-npcma.ru,Nizhnekamsk Enterprise,Industrial
-ntirety.com,Ntirety,MSP
-nw027.com,Poppulo (Formerly Newsweaver),SaaS
-obit.kz,OBIT,ISP
-ocn.ad.jp,NTT,ISP
-octacom.ca,Octacom,MSP
-odoo.com,Odoo,SaaS
-odu.edu,Ohio Dominican University,Education
-ohio.edu,Ohio University,Education
-okayama-u.ac.jp,Okayama University,Education
-okta.com,Okta,SaaS
-one.com,One.com,Web Host
-one.th,One Platform,Email Provider
-online.kz,Kazakhtelecom,ISP
-online.net,Scaleway,Email Provider
-online.tj.cn,China Unicom,ISP
-openair.com,Oracle NetSuite OpenAir,SaaS
-opentext.com,OpenText,SaaS
-optimus.si,Optimus IT d.o.o.,MSP
-orange.fr,Orange,Email Provider
-orbital.net,Orbital Net,ISP
-oregonstate.edu,Oregon State University,Education
-orthodoxws.com,Orthodox Web Solutions,Web Host
-osu.edu,The Ohio State University,Education
-ottcmail.com,Ontario & Trumansburg Telephone Companies,ISP
-outlook.com,Outlook (Personal and Microsoft 365),Email Provider
-ovh.net,OVH,Web Host
-ovh.us,OVH,Web Host
-ox.ac.uk,Education of Oxford,Education
-oxsus-vadesecure.net,Scaleway,Web Host
-pair.com,Pair Networks,Web Host
-pairdomains.net,Pair Domains,Web Host
-palette-up.jp,Palette UP,Web Host
-parkerinstitute.org,Parker Jewish Institute for Healthcare & Rehabilitation,Healthcare
-paubox.com,Paubox,Email Security
-pd25.com,Salesforce Marketing Cloud (Formerly Pardot),Marketing
-peaknet.net,PeakNet,Industrial
-peopleanswers.com,Infor,SaaS
-pepitrans01.com,Netcore (Formerly Pepipost),SaaS
-pepitrans02.com,Netcore (Formerly Pepipost),SaaS
-perception-point.io,Perception Point,Email Security
-perenso.com,Perenso,Marketing
-perfora.net,IONOS,Web Host
-pfmsys.com,"Professional Flight Management, Inc. (PFM)",Logistics
-pipefy.com,Pipefy Inc,SaaS
-plala.or.jp,Plala,ISP
-playbackmail.com,PlayBackMail,Email Provider
-pobox.com,Pobox,Email Provider
-pol.ir,ParsOnline,ISP
-pol-online.com,Bangladesh Online,ISP
-poneytelecom.eu,Pony Telecom,Web Host
-porkbun.com,porkbun.com,ISP
-portative.net,Portative Technologies,ISP
-ppe-hosted.com,Proofpoint Essentials,Email Security
-pphosted.com,Proofpoint,Email Security
-prchost.com,PRC Hosting,Web Host
-prempub.com,Premier Publishing,Marketing
-princeton.edu,Princeton University,Education
-principal-it.com,Principal IT,MSP
-privateemail.com,PrivateEmail.com,Email Provider
-privatelayer.com,Private Layer,Web Host
-privatesystems.net,PrivateSystems.net,Web Host
-profitserver.ru,Profitserver,Web Host
-proton.ch,Proton,Email Provider
-protonmail.ch,Proton,Email Provider
-pserver.space,Profitserver,Web Host
-psychz.net,Psychz Networks,Web Host
-ptd.net,PTD,ISP
-pucminas.br,PUC Minas,Education 
-pulsetv.com,Pulse TV,Retail
-purdue.edu,Purdue University,Education
-qemailserver.com,Qualtrics,SaaS
-qq.com,QQ,Email Provider
-qrc.ca,Quality Respiratory Care,Healthcare
-qth.com,QTH.com,Web Host
-quadax.com,Quadax,Healthcare
-quadranet.com,Quadranet,Web Host
-rackspace.com,Rackspace,Web Host
-ramsaysante.fr,Ramsay Santé,Healthcare
-raycdjr.com,Ray Chrysler Dodge Jeep RAM,Automotive
-rcn.com,RCN,ISP
-redbird.net,NexGenAccess (Formerly Redbird),ISP
-redexpertos.com,RedExpertos,Web Host
-redirection.net,Redirectionet,Web Host
-regiomed-kliniken.de,REGIOMED-KLINIKEN GmbH,Healthcare
-registeredsite.com,Web.com,Web Host
-regxa.com,Regxa Cloud,Web Host
-riskonnectclearsight.com,Riskonnect ClearSight,SaaS
-ritternet.com,Ritter Communications,ISP
-rmx.de,Retarus GmbH,SaaS
-rootlayer.net,RootLayer LTD.,Web Host
-rsa.com,RSA,Technology
-rsgsv.net,Intuit Mailchimp,Marketing
-rt.ru,RT,Government Media
-rutgers.edu,Rutgers University,Education
-rzone.de,Strato AG,Web Host
-saimanet.kg,Saima Telecom,ISP
-salesforce.com,Salesforce,SaaS
-samanage.com,SolarWinds Service Desk,SaaS
-sandrix.com,Sandrix Technologies,MSP
-sarkor.uz,Sarkor,ISP
-scorm.com,SCORM,SaaS
-sdldelivery.com,Specialty Delivery & Logistics,Logistics
-secure.ne.jp,KIDDI,ISP
-secure-mails.com,Tata Communications,SaaS
-securemx.jp,IIJ SecureMX,Email Security
-securence.com,Securence,Email Security
-secureserver.net,GoDaddy,Web Host
-sendgrid.net,Twilio SendGrid,Marketing
-sendio.com,Sendio,Email Security
-seqtek.net,SEQTEK,MSP
-servconfig.com,InMotion Hosting,Web Host
-serverdata.net,GoDaddy,Web Host
-servicemail24.de,Arvato Systems,MSP
-service-now.com,ServiceNow,SaaS
-servidoresdns.net,Arsys,Web Host
-shatel.ir,Shatel,ISP
-showpad.com,Showpad,Marketing
-simus.uz,Simus,ISP
-siriustelecom.uz,Sirius Telecom,ISP
-siteprotect.com,SiteMail,Email Provider
-smartape.ru,Smart Ape LLC,Web Host
-smartspb.net,Smart Telecom,ISP
-smtp.com,SMTP.com,SaaS
-smtp25.com,Zix,Email Security
-smtp2go.com,SMTP2GO,SaaS
-sophos.com,Sophos,Email Security
-spamtitan.com,SpamTitan,Email Security
-sparkpostmail.com,SparkPost,Marketing
-spectrum.com,Spectrum,ISP
-speedway.hk,Speedway Travels,Travel
-spglobal.com,S&P Global,Finance
-srvape.com,Smart Ape LLC,Web Host
-stanford.edu,Stanford University,Education
-stargatecommunications.com,X-Link Limited,ISP
-state.co.us,The State of Colorado,Government
-state.ma.us,The State of Massachusetts,Government
-state.ms.us,The State of Missouri,Government
-state.or.us,The State of Oregon,Government
-stellarllc.net,Gardonville Cooperative Telephone Association,ISP
-stewarthowe.com,Newfold Digital,Web Host
-stomabags.com,Stomabags.com,Healthcare
-stonybrook.edu,Stonybrook University,Education
-strategictreasurer.com,Strategic Treasurer,Finance
-stratoserver.net,STRATO,Web Host
-superb.net,CherryRoad (Formerly Superb Internet),Web Host
-sureserver.com,SureSupport LLC,Web Hosting
-syn-alias.com,Synacor,SaaS
-synchronoss.net,Synchronoss,SaaS
-sysnet.ie,VikingCloud,MSP
-tachc.org,Texas Association of Community Health Centers (TACHC),Healthcare
-takethemameal.com,Take Them A Meal,SaaS
-tctwest.net,TCT,ISP
-teche.net,Uniti,MSP
-telecom.kz,Kazakhtelecom,ISP
-telecomitalia.it,TIM,ISP
-telekom.rs,MTS,ISP
-telus.net,TELUS,ISP
-terra.com,Terra Networks,Web Hosting
-tenders.net,Tenders.net,SaaS
-thechristhospital.com,The Christ Hospital,Healthcare
-thomsonreuters.com,Thomson Reuters,SaaS
-tical.com,Grupo Tical,Logistics
-tidewater.net,Tidewater Telecom,ISP
-tie.cl,Telefónica Internet Empresas S.A.,ISP
-tim.it,TIM,ISP
-timeweb.ru,Timeweb,Web Host
-tisco.mx,TISCO Networks,MSP
-titan.email,Titan,Email Provider
-titanhq.com,TitanHQ,Email Security
-tix.it,Tuscany Internet eXchange,ISP
-tm.net,Mercury Telecom,ISP
-tmddedicated.com,TMDHosting,Web Host
-tohoku.ac.jp,Tohoku University,Education
-tohoyk.co.jp,Toho Pharmaceutical,Healthcare
-tosoh.co.jp,Tosoh,Industrial
-tps.uz,TPS Telecom,ISP
-transtelecom.net,Trans Telecom,ISP
-trendmicro.com,Trend Micro,Email Security
-trendmicro.eu,Trend Micro,Email Security
-truemail.co.th,"True Internet Co., Ltd.",ISP
-ttk.ru,Joint Stock Company TransTeleCom,ISP
-tufts.edu,Tufts University,Education
-ubc.ca,The University of British Columbia,Education
-uchealth.com,UC Health,Healthcare
-ucla.edu,UCLA,Education
-uclouvain.be,UCLouvain,Healthcare
-ucom.am,Ucom LLC,ISP
-ufanet.ru,Ufanet,ISP
-ufl.edu,University of Florida,Education
-u-fukui.ac.jp,University of Fukui,Education
-uhc.com,United Healthcare,Healthcare
-uhu.es,University of Huelva,Education
-uky.edu,University of Kentucky,Education
-ultravision.com.mx,Ultracel,ISP
-umich.edu,University of Michigan,Education
-umin.ac.jp,University Hospital Medical Information Network (UHIN) of Japan,Healthcare
-umn.edu,University of Minnesota,Education
-unifiedlayer.com,UnifiedLayers,Web Host
-uninet-ide.com.mx,Telmex,ISP
-unity-health.org,Unity Health,Healthcare
-univac.com.sg,Univac,Industrial
-untd.com,"United Online, Inc.",ISP
-uoeh-u.ac.jp,"University of Occupational and Environmental Health, Japan",Education
-uol.com.br,UOL - UNIVERSO ONLINE S/A,Web Host
-usp.br,University of São Paulo,Education
-ussignalcom.net,US Signal,MSP
-utah.edu,University of Utah,Education
-u-tokai.ac.jp,Toki University,Education
-u-tokyo.ac.jp,University of Tokyo,Education
-uvm.edu,University of Vermont,Education
-va.gov,U.S. Department of Veterans Affairs,Government
-vdonsk.ru,Microel,ISP
-vedco.com,Vedco,Healthcare
-verginia.edu,University of Virginia,Education
-verizon.net,Verizon,ISP
-verizonbusiness.com,Verizon Business,ISP
-videotron.ca,Videotron,ISP
-videotron.com,Videotron,ISP
-viecuri.nl,VieCuri,Healthcare
-viettel.vn,Viettel,ISP
-virginia.edu,The University of Virginia,Education
-virtualhosting.hk,UDomain,Web Host
-vnpt.vn,VNPT,ISP
-vtext.com,Verizon SMS,ISP
-vulcnmold.com,VulcanMold,Industrial
-vwhs.org,Wally-Wide Health,Healthcare
-wadax.ne.jp,WADAX,Web Host
-wadax-sv.jp,WADAX,Web Host
-washington.edu,University of Washington,Education
-wasip.com,WASIP Ltd.,Healthcare
-wbhcp.com,Williams Bros Pharmacy,Healthcare
-web-hosting.com,Namecheap,Web Host
-webhostingireland.ie,Hosting Ireland,Web Host
-webpal.com,WebPal,Web Hosting
-webzineonline.com,Webzine Online,Marketing
-wescor.com,Wescor Inc.,Healthcare
-westdc.net,"WestHost, Inc.",Web Host
-what-if.com,The Imagination Factory,MSP
-wightman.ca,Wrightman Telecom,ISP
-windstream.net,Windstream,ISP
-wise.net.lb,WISE,ISP
-wntellecom.net.br,WN Tellecom,ISP
-wordpress.com,Wordpress.com,Web Host
-wpxhosting.com,WPX Hosting,Web Host
-wsh.care,The Woodlands Specialty Hospital,Healthcare
-wustl.edu,Washington University in St. Louis,Education
-xbiz.ne.jp,Xserver,Web Host
-xceleratorsoftware.com,Key Software Systems Xcelerator,SaaS
-xecu.net,Xecunet,MSP
-xmission.com,XMission,SaaS
-xrea.com,XREA,Web Host
-xserver.jp,Xserver,Web Host
-yahoo.co.jp,Yahoo Japan,Email Provider
-yahoo.com,Yahoo,Email Provider
-yamaguchi-u.ac.jp,Yamaguchi University,Education
-yamanashi.ac.jp,Yamanashi University,Education
-yelpcorp.com,Yelp,Social Media
-yourconnect.com,"Yourconnect Co., Ltd.",Web Host
-your-server.de,Hetzner,Web Host
-yurekpharmacy.com,Yurek Pharmacy,Healthcare
-zaansmc.nl,Zaans Medical Center,Healthcare
-zare.com,Zare,Web Host
-zixsmbhosted.com,Zix,Email Security
-zixworks.com,Zix,Email Security
-zoho.com,Zoho,SaaS
-zoho.in,Zoho,SaaS
-zohocorporation.com,Zoho,SaaS
-zoneedit.com,Zoneedit,Web Host
-zsttk.ru,TTK,ISP
-zdsys.com,Zendesk,SaaS
-zyner.org,Zyner,Email Provider
-zyner.net,Zyner,Email Provider
-zyner.one,Zyner,Email Provider
+base_reverse_dns,name,type
+1e100.net,Google,Technology
+2tay.kz,2DAY Telecom LLP,ISP
+a2hosting.com,A2Hosting,Web Host
+ab-group.biz,AsiaBell,ISP
+accessmedlab.com,Access Medical Labs,Healthcare
+acelerate.net,AXS Bolivia S. A.,ISP
+activegate-ss.jp,Active! gate SS,Email Security
+adairit.com,Adair IT,MSP
+admintek.net,Admintek,Web Host
+admintekcr.net,Admintek,Web Host
+adnsl.com,ADN Telecom,ISP
+adp.com,ADP,Finance
+adventconstructions.co.tz,Advent Construction Limited,Industrial
+aeroinc.net,The Areo Group,Industrial
+aeza.network,Aeza,Web Host
+afghan-wireless.com,Afgan Wireless,ISP
+af-k.de,I-NetPartner GmbH,ISP
+aichi-colony.jp,Aichi Developmental Disability Center,Healthcare
+aigmedical.com,Affiliates in Gastroenterology,Healthcare
+aila.org,American Immigration Lawyers Association,Nonprofit
+airtel.co.zm,Airtel,ISP
+airtelbroadband.in,Airtel,ISP
+ajusa.com,AJ-USA,Retail
+aknet.kg,AkNet,ISP
+albatros.uz,Albatros Health Care,Healthcare
+alembic.co.in,Alembic Pharmaceuticals,Healthcare
+alestra.net.mx,Alestra,ISP
+alpha-prm.jp,Otsuka Corporation,ISP
+altel.kz,Atel,ISP
+altmanadvisors.com,Altman Advisors,Finance
+amazonaws.com,Amazon Web Services (AWS),PaaS
+amazonses.com,Amazon SES,SaaS
+ambisys.net,Ambisys,Healthcare
+americanam.org,American Advanced Management,Healthcare
+amethyst.co.jp,Amethyst,Healthcare
+antelecom.net,Antelecom,ISP
+antispamcloud.com,N-able,Email Security
+antispameurope.com,Hornetsecurity,Email Security
+applicationx.net,Application X,MSP
+appriver.com,OpenText AppRiver,Email Security
+aqmhost.net,AqmHost,Web Host
+aragon.es,Government of Aragon,Government
+archerirm.us,RSA Archer GRC,SaaS
+arizona.edu,University of Arizona,Education
+arpinet.am,Arpinet,ISP
+aruba.it,Aruba.it.,Web Host
+asahikawa-med.ac.jp,Asahikawa Med,Healthcare
+ashtelstudios.com,Ashtel Studios,Healthcare
+askbis.com,"BIS, Inc.",Web Host
+assentportal.com,Assent,SaaS
+atmailcloud.com,atmail,Email Provider
+ats.ca,ATS Healthcare,Healthcare
+atw.ne.jp,ATW,Web Host
+aussiebb.com.au,Aussie Broadband,ISP
+aviso.ci,Orange,ISP
+axtel.net,Axtel,ISP
+azeronline.com,Azeronline,ISP
+azteca-comunicaciones.com,Aztec Communications Columbia,ISP
+azure.com,Microsoft Azure,PaaS
+balifiber.id,BaliFiber,ISP
+barracuda.com,Barracuda,Email Security
+bayada.com,BAYADA Home Health Care,Healthcare
+bayer.de,Bayer,Healthcare
+bbtel.com,BBTEL,ISP
+bcs.org,BCS,Nonprofit
+beaumont.org,Corewell Health (Formerly Beaumont),Healthcare
+bell.ca,Bell Canada,ISP
+bell.net,Bell Canada,ISP
+betterhomeowners.com,InTouch Systems,Marketing
+bigcommerce.net,BigCommerce,SaaS
+bisv.ru,Bisv.ru,ISP
+blacknight.com,Blacknight Solutions,Web Host
+bluehost.com,Bluehost,Web Host
+bluemission.net,Blue Mission,Web Host
+bluetie.com,BlueTie,MSP
+bohc.co.jp,Benefit One Inc.,Retail
+bov.com,Bank of Valletta,Finance
+bracnet.net,BRACNet Limited,ISP
+bravehost.com,Bravenet,Web Host
+bravenet.com,Bravenet,Web Host
+braveriver.com,Brave River,MSP
+breezelineohio.net,Breezeline,ISP
+brinkster.com,Brinkster,Web Host
+bulsat.com,Bulsatcom,ISP
+burnhamholdings.com,Burnham Holdings,Industrial
+buroserv.net.au,Brunoserv,ISP
+cable.net.co,Cablenet,ISP
+caiway.nl,Caiway,ISP
+calero.com,Calero,MSP
+calpoly.edu,Cal Poly,Education
+canonet.ne.jp,Canonet,MSP
+cardinalhealth.com,Cardinal Health,Healthcare
+carecentrix.com,CareCentrix,Healthcare
+carrierzone.com,carrierzone,Email Security
+cbe.ae,CBE,Construction
+cbwchc.org,Charles B. Wang Community Health,Healthcare
+ccc-group.com,Canada Colors and Chemicals Limited (CCC),Industrial
+celeste.fr,CELESTE,ISP
+centerasecurity.com,Centera Email Defence,Email Security
+centerasecurity.dk,Centera Email Defence,Email Security
+centralinteractiva.com.mx,Central Interactiva,Marketing
+centurylink.com.pe,Cirion,MSP
+charter.net,Charter,ISP
+chikamori.com,Chikamori Health Care Group,Healthcare
+childrenscolorado.org,Children's Hospital Colorado,Healthcare
+chinamobile.com,China Mobile,ISP
+chinaunicom.cn,China Unicom,ISP
+chinaxingye.com,"Suzhou Sinye Materials Technology Co., Ltd.",Industrial
+cimcorp.com,Cimcorp,Industrial
+circleamedical.com,Circle A Medical,Healthcare
+cirrushosting.com,Cirrus Hosting,Web Host
+cisco.com,Cisco,Technology
+ckt.net,Craw-Kan Telephone Cooperative,ISP
+claro.com.ec,Claro,ISP
+claro.net.do,Mail2World,Email Provider
+clearwave.com,Clearwave Fiber,ISP
+clemson.edu,Clemson University,Education
+climaideal.com,Clima Ideal,Retail
+cloudfilter.net,Proofpoint Cloudmark,Email Security
+cloudflare.net,Cloudflare,SaaS
+cloudflare-email.net,Cloudflare,Email Security
+cloud-sec-av.com,Check Point Avanan,Email Security
+cloudwaysapps.com,Cloudways,Web Host
+cniteam.com,CNI,ISP
+colocrossing.com,ColoCrossing,ISP
+comcast.net,Comcast,ISP
+comcastbusiness.net,Comcast Business,ISP
+communitect.com,Solutionreach,SaaS
+computronics.com,Computronics,Technology
+concurcompleat.com,Concur Compleat,SaaS
+concursolutions.com,SAP Concur,SaaS
+condosites.net,CondoSites,SaaS
+conoha.ne.jp,ConoHa,Web Host
+constantcontact.com,Constant Contact,Marketing
+contaboserver.net,Contabo,Web Host
+corbina.ru,PJSC VimpelCom,ISP
+cornell.edu,Cornell University,Education
+cotecal.com.ar,Cotecal,ISP
+cox.net,Cox Communications,ISP
+cp247.net,M247,Web Host
+cpi.ad.jp,CPI,Web Host
+cpsinet.com,TruBridge,Healthcare
+creehan.com,Inovalon (Formerly Creehan & Company),Healthcare
+csloxinfo.com,CSL,MSP
+csod.com,Cornerstone,SaaS
+ctbcbank.com.ph,CTBC Bank (Philippines) Corp.,Finance
+cuenote.jp,Cuenote,SaaS
+cvent-planner.com,Cvent,SaaS
+cvtsv.com,Cvent,SaaS
+cwru.edu,Case Western Reserve University,Education
+cyberlynk.net,CyberLynk,MSP
+cybermail.jp,CyberMail,Email Provider
+cybernextech.co.th,CYBER NEXTECH,Web Hosting
+cyfrowypolsat.pl,Polsat Box,ISP
+d2s.cloud,d2s.cloud,Web Host
+daemonmail.ner,DaemonMail,Email Provider
+dailyinvesthub.com,Daily Invest Hub,Finance
+damel.com,Damel Group,Food
+ddccommunications.com,DDC public affairs,Marketing
+default-host.net,INHOSTED LP,Web Host
+delhitel.net,Delhi Telephone Company,ISP
+dexanet.co.id,Dexanet,ISP
+dhl.com,DHL,logistics
+diakovere.de,DIAKOVERE,Healthcare
+digitalairstrike.com,Digital Air Strike,Marketing
+digiturunc.com,Digiturunc,Web Host
+dimenoc.com,"HostDime.com, Inc.",Web Host
+directnic.net,Directnic.com,Web Host
+directwifi.com.br,Direct Internet,ISP
+disenosweb.mx,Hive Studio,Web Host
+dishemail.com,DISH,ISP
+dji.com,DJI,Technology
+dlivry.co,Twilio SendGrid,Marketing
+dosscloudservices.com,Doss Business Systems,MSP
+doteasy.com,Doteasy,Web Host
+dotroll.com,DotRoll,Web Host
+dreamcompute.com,Dreamhost,Web Hosting
+dreamhost.com,Dreamhost,Web Host
+dreamhostps.com,Dreamhost,Web Host
+dslon.ws,Dslon Wireless,ISP
+dvcotechnology.com,Cision,Marketing
+dynamic-mytachyon.in,Tachyon Communications,ISP
+e2ma.net,Emma,Marketing
+eastern-tele.com,Eastern Communications,ISP
+eastlink.ca,Eastlink,ISP
+easydns.com,easyDNS,Web Host
+eboundhost.com,eBoundhost,Web Host
+echolabs.net,Echo Labs,MSP
+edgepark.com,Edgepark,Healthcare
+eduneering.com,UL EHS training,SaaS
+ehafconsulting.org,EHAF Consulting Engineers,Construction
+ehostsolution.net,E Host Solution,Web Hosting
+eigbox.net,Newfold Digital,Web Host
+eircom.net,Eir,ISP
+elcat.kg,ElCat,ISP
+electric.net,VIPRE,Email Security
+eleven.mx,E;rven Marketing Labs,Marketing
+elink.net,Earthlink,ISP
+elive.net,Elive,Web Hosting
+emailarray.com,Emailarray,Email Provider
+emailservice.io,Mailprotector,Email Security
+emailsrv.net,Mailprotector,Email Security
+emailsrvr.com,Rackspace Email,Email Security
+encrypttitan.net,EncryptTitan,Email Security
+enguard.com,EnGuard,Email Security
+entelchile.net,Entel,ISP
+entrata.com,Entrata,SaaS
+epicura.be,EpiCURA,Healthcare
+erie.gov,"Erie County, New York",Government
+erlabrunn.de,Kliniken Erlabrunn,Healthcare
+ertelecom.ru,ER-Telecom,ISP
+eskerondemand.com,Esker,SaaS
+etc.uz,East Telecom,ISP
+etipres.com,ETIPRES,Print
+etouches.com,Stova,SaaS
+eventsairmail.com,EventsAir,SaaS
+evertecinc.com,Evertec,Finance
+evertecpr.com,Evertec,Finance
+exacthosting.com,Exact Hosting,Web Host
+exactt.com,Salesforce Marketing Cloud (Formerly ExactTarget),Marketing
+exacttarget.com,Salesforce Marketing Cloud (Formerly ExactTarget),Marketing
+expedia.net,Expedia,Travel
+ezorg.nl,E-Zorg,Healthcare
+fastnet.kg,FastNet,ISP
+fastspeed.dk,Fastspeed,ISP
+fedex.com,FedEx,Logistics
+fiberhub.com,FiberHub,ISP
+fireeyecloud.com,FireEye,Email Security
+fireeyegov.com,FireEye (Government),Email Security
+firstcloudsecurity.net,CyberCision,Email Security
+fisherpaykel.com,Fisher & Paykel,Retail
+flinnsci.com,Flinn Scientific,Healthcare
+flywheelsites.com,Flywheel,Web Host
+fmcna.com,Fresenius Medical Care,Healthcare
+fmu.ac.jp,Fukushima Medical University,Education
+formassembly.com,FormAssembly,SaaS
+forthnet.gr,Nova,ISP
+fortimail.com,Fortinet FortiMail,Email Security
+forwardemail.net,ForwardEmail.net,Email Provider
+fourseasonspediatrics.com,Four Seasons Pediatrics,Healthcare
+franchisemail.net,FranConnect,SaaS
+freehostia.com,Freehostia,Web Host
+fujita-hu.ac.jp,Fujita Health University,Healthcare
+fuse.net,Altafiber (Formerly Cincinnati Bell),ISP
+fusionconnect.com,Fusion Connect,MSP
+gaggle.net,Gaggle,SaaS
+gandi.net,Gandi.net,Web Host
+gastrogainesville.com,Gastroenterology Associates of Gainesville,Healthcare
+gci.net,GCI,ISP
+gen2fund.com,Gen II,Finance
+ghm-grenoble.fr,Groupe hospitalier mutualiste de Grenoble,healthcare
+globalit.com,Global IT,MSP
+gmoserver.jp,GMO,Web Hosting
+gmu.edu,George Mason University,Education
+gmx.com,GMX,Email Provider
+google.com,Google (Including Gmail and Google Workspace),Email Provider
+googleusercontent.com,Google Cloud Platform (GCP),PaaS
+gosecure.net,GoSecure,Email Security
+goskope.com,Netskope,Email Security
+gov.in,Indian government,Government
+gpphosted.com,Proofpoint (Government),Email Security
+grainger.ca,Grainger Industrial Supply,Industrial
+grainger.com,Grainger Industrial Supply,Industrial
+graysmark.net,Graysmark Business Systems,MSP
+greenarrowmail.com,GreenArrow ,SaaS
+greenconsulting.it,Green Consulting,MSP
+grupocybernet.com.br,Grupo Cybernet,ISP
+gsbridge.com,Golden State Bridge,Industrial
+gtnexus.com,Infor Nexus (Formerly GT Nexus),SaaS
+gwu.edu,The George Washington University,Education
+hanami.run,Mailwip (Formerly Hanami),Email Provider
+hanastar.net.id,HSnet,ISP
+harrishealth.org,Harris Health System,Healthcare
+harvard.edu,Harvard University,Education
+healthall.com,UC Health,Healthcare
+healthcaresupplypros.com,Healthcare Supply Pros,Healthcare
+healthproductsforyou.com,Health Products For You,Healthcare
+helpscout.net,Help Scout,SaaS
+heywoodhill.com,Heywood Hill,Retail
+hhsys.org,Huntsville Hospital,Healthcare
+hickorytech.net,Consolidated Communications,ISP
+highradiuscorp.com,HighRadius,Finance
+highspot.com,Highspot,Marketing
+hinet.net,HiNet,ISP
+h-isac.org,H-ISAC,Healthcare
+hokudai.ac.jp,Hokkaido University,Education
+hostedemail.com,HostedEmail.com,Email Provider
+hosting.ie,Irish Domains Limited,Web Host
+hosting-mexico.net,Hosting-Mexico,Web Host
+hostmonster.com,Hostmonster,Web Host
+hostneverdie.com,Hostneverdie,Web Host
+hostresolver.net,Stack Harbor,Web Host
+hosts.co.uk,Namesco Limited,Web Host
+hostsevenplus.com,HostSevenPlus,Web Host
+hostwindsdns.com,Hostwinds,Web Host
+hotnet.net.il,Hot Net Internet Services,ISP
+htc.net,HTC,ISP
+htmlservices.it,HTMLServices.it,MSP
+hubspotemail.net,HubSpot,Marketing
+hughston.com,Hughston Clinic,Healthcare
+hvvc.us,Hivelocity,Web Host
+i4i.com,i4i,Technology
+ice.co.cr,Grupo ICE,Industrial
+ideaservers.net,Hetzner,Web Host
+idig.net,Canadian Web Hosting,Web Host
+iftnet.com.br,IFTNET Telecom,ISP
+iglou.com,IgLou Internet Services,ISP
+ilap.com,ILAP,ISP
+improvmx.com,ImprovMX,Email Provider
+imsbiz.com,Hong Kong Telecommunications (HKT) ,ISP
+incontact.com,NICE CX,SaaS
+indemed.com,Cardinal Health at-home (Formerly Independence Medical),Healthcare
+indytel.com,Independence Light & Power Telecommunications,ISP
+infolink.ru,Infolink,ISP
+inforcloudsuite.com,Infor,SaaS
+inkyphishfence.com,INKY,Email Security
+inmotionhosting.com,InMotion Hosting,Web Host
+innovasur.com,Innovasur,MSP
+inspiren.my,Inspiren,Marketing
+instantprint.com,Instant Print Corp,Print
+intermetalsa.co.mz,Intermetal,Construction
+internetmailserver.net,Internet Mail Server Networks,Email Provider
+investinmiddlesex.ca,Middlesex County,Government
+inxserver.de,Inxmail,Marketing
+ionblade.com,IonBLADE,Web Host
+iphmx.com,Cisco Cloud Email Security (CES),Email Security
+iphotel.net.br,IPHOTEL Hospedagem de Sites LTDA,Web Host
+iphouse.net,ipHouse,Web Host
+iqhive.com,IQ Hive,MSP
+ironwoodcrc.com,Ironwood Cancer & Research Centers,Healthcare
+ispgateway.de,domainfactory GmbH,Web Host
+isplevel.pro,ISPLevel,Web Host
+ispn.net,ISPN,MSP
+ispserver.com,ISPServer,Web Hosting
+issr.ru,Mobile TeleSystems,ISP
+itscom.net,iTSCOM,IPS
+iwashiya-nagai.co.jp,"Iwashiya Nagai Co., Ltd.",Healthcare
+jikei.ac.jp,The Jikei University,Education
+johnshopkins.edu,Johns Hopkins University,Education
+jweiland12.net,domainfactory GmbH,Web Host
+kagoya.net,KAGOYA,Web Host
+kalittacharters.com,Kalitta Charters,Logistics
+kcell.kz,Kcell,ISP
+kcn.ne.jp,KCN,ISP
+kddi.ne.jp,KIDDI,ISP
+kendall.cz,"GPS Praha, s.r.o.",Healthcare
+kennesawtrans.com,Kennesaw Transportation,Logistics
+keralavisionisp.com,Keralavision Broadband,ISP
+kingswoodfacadesthailand.com,Kingswood Facades Thailand,Industrial
+kirkbrothers.com,Kirk Brothers Supercenter,Automotive
+klinik-arlesheim.ch,Klinik Aresheim,Healthcare
+kmtn.ru,Kostrom City Telephone Network,ISP
+knet.kg,Kyrgyztelecom,ISP
+kobe-u.ac.jp,Kobe University,Education
+kodiaksys.com,ARIOS,SaaS
+kovacmed.com,KOVAC-MED,Healthcare
+kreativemachinez.tech,Kreative Machinez,Marketing
+kryptronic.com,Kryptronic,SaaS
+ktc.kz,KTC Kazakhstan LLP,Industrial
+kundenserver.de,domainfactory GmbH,Web Host
+kyoto-u.ac.jp,Kyoto University,Education
+l3harris.com,L3Harris,Defense
+larkinhospital.com,Larkin Health System,Healthcare
+larrycomputerguy.com,Larry The Computer Guy,MSP
+lauruslabs.com,Lasarus Labs,Healthcare
+lb.go.gov.br,Government of Goias State Brasil,Government 
+lcmh.com,Lake Charles Memorial Health System,Healthcare
+leftor.ba,Leftor,Web Hosting
+lestetelecom.com.br,Leste,ISP
+lghealth.org,Penn Medicine Lancaster General Health,Healthcare
+link3.net,Link3 Technologies,ISP
+linkedin.com,LinkedIn,Social Media
+live-servers.net,Fasthosts Internet Ltd,Web Host
+llumc.edu,Loma Linda University Medical Center,Healthcare
+locaweb.com.br,Locaweb,Web Host
+logix.in,Logix InfoSecurity,MSP
+lpn.co.th,L.P.N. Development PCL,Real Estate
+lstn.net,Limestone Networks,Web Host
+luxsci.com,LuxSci,Email Security
+lytehosting.com,Lyte Hosting,Web Hosting
+m9network.com,Volico Data Centers,Web Host
+macrx.com,MAC Rx,Healthcare
+maersk.com,Maersk,Logistics
+mail.ru,Mail.ru,Email Provider
+mail2world.com,Mail2World,Email Provider
+mailbaby.net,Mail Baby,Email Security
+mailchannels.net,MailChannels,Web Host
+mailcontrol.com,Forcepoint,Email Security
+mailgun.info,Mailgun,SaaS
+mailgun.net,Mailgun,SaaS
+mailgun.us,Mailgun,SaaS
+mailhop.org,DuoCircle,Email Security
+mailhostbox.com,Unified Layer,Web Host
+mailinblack.com,Mailinblack,Email Security
+mailplug.co.kr,Mailplug,Email Provider
+mailplug.com,Mailplug,Email Provider
+mailroute.net,MailRoute,Email Security
+mailsecure.jp,"NTTPC Communications, Inc.",Email Security
+mailspamprotection.com,SiteGround,Web Host
+makeshop.jp,makeshop,SaaS
+mandrillapp.com,Mailchimp Transactional,SaaS
+mark-itt.net,Point Internet,ISP
+marriott-service.com,Marriott,Travel
+materprivate.ie,Mater Private Network,Healthcare
+maxaninteirorsystems.com,Maxan Interior Systems,Industrial
+maximtech.com,Maximtech,Web Host
+maximweb.com,Maxim Management Services,Healthcare
+maxnet.ua,Maxnet,ISP
+mccooknet.com,McCookNet,Web Host
+mcdlv.net,Intuit Mailchimp,Marketing
+mchsi.com,MediacomCable,ISP
+mcmaster.com,McMaster-Crr,Manufacturing
+mcsv.net,Intuit Mailchimp,Marketing
+mdlsx.ca,Middlesex County,Government
+me.com,Apple iCloud,Email Provider
+medline.com,Medline,Healthcare
+mega.kg,Maga-Line,ISP
+mega.kg,Mega-Line,ISP
+megacom.kg,MegaCom,ISP
+megamailservers.com,MegaMailServers,MSP
+menlosecurity.com,Menlo Security,Email Security
+mercranet.com,Mercranet,Web Host
+mercurygate.net,MercuryGate,SaaS
+messagelabs.com,Symantec Email Security,Email Security
+messagingengine.com,Fastmail,Email Provider
+mesvr.com,ReadNotify,Email Provider
+metricsthatmatter.com,Metrics That Matter,SaaS
+mho.de,Marienhospital Osnabrück,Healthcare
+mhos.de,Marienhospital Osnabrück,Healthcare
+mia.net,HostDrive,Web Host
+miamioh.edu,Miami University,Education
+microsoft.com,Microsoft,Technology
+middlesex.ca,Middlesex County,Government
+mimecast.com,Mimecast,Email Security
+mit.edu,MIT,Education
+mivamerchant.net,Mirva,SaaS
+mknetwork.com.br,MkK Network Telecom,ISP
+mktomail.com,Marketo,Marketing
+mlems.ca,Middlesex-London Paramedic Service,Healthcare
+mlps.ca,Middlesex-London Paramedic Service,Healthcare
+mmm.com,3M,Technology
+mmrs.jp,Mirai Communication Network Inc.,Web Host
+modenesegastone.com,Modenese Gastone,Retail
+molalla.net,Molalla Communications,ISP
+moniker.com,Moniker,Web Host
+moovik.com.ua,MooVik,Retail
+movitel.co.mz,Movitel,ISP
+msgexch.com,Constant Contact,Marketing
+mtaroutes.com,N-able,Email Security
+mtasv.net,Postmark,SaaS
+mts.ru,MTS,ISP
+mtu-net.ru,Mobile TeleSystems,ISP
+mundivox.com,Mundivox Communications,ISP
+musashi-eng.co.jp,Musashi Engineering,Manufacturing
+mwprem.net,NTT,ISP
+mx.net,Silversky,Email Security
+mxrecord.io,Area 1 Email Security,Email Security
+mxrecord.mx,Area 1 Email Security,Email Security
+mxroute.com,MXroute,Email Provider
+mydsomanager.com,My DSO Manager,SaaS
+myfleetvehicle.com,ATS Processing Services,Finance
+mymts.net,Bell MTS,ISP
+mysecurecloudhost.com,World Host Group,Web Host
+my-tss.com,Performive,MSP
+mywhc.ca,Web Hosting Canada,Web Host
+myworkday.com,Workday,SaaS
+nagoya-cu.ac.jp,Nagoya City University,Education
+nagoya-u.ac.jp,Nagoya University,Education
+nahealth.com,Northern Arizona Healthcare,Healthcare
+name.com,Name.com,Web Host
+nano.uz,Nano Telecom,ISP
+naviexp.jp,NaviExp,MSP
+nbcb.cn,Bank of Ningbo,Finance
+needles.co.kr,Tae Chang Industrial,Healthcare
+netcore.co.in,Netcore,Marketing
+netdesignhost.com,"Netdesign Group Co.,Ltd.",Web Host
+netfinn.net,netFinn,Web Host
+netmds.com,Net Doctors,MSP
+netrevolution.com,NetRevolution,ISP
+netroad.ru,Mobile TeleSystems,ISP
+netsolus.com,netsolus KC,MSP
+net-uno.net,"Net Uno, C.A.",ISP
+neuca.pl,NECUA Group,Healthcare
+newsunseo.com,NewSunSEO,Marketing
+newtekwebhosting.com,Newtek Technology Solutions,Web Host
+ngpweb.com,Bonterra,Marketing
+nhisac.org,H-ISAC,Healthcare
+nicmail.ru,RU-CENTER,Email Provider
+nifty.com,@nifty,Web Host
+niigata-u.ac.jp,Niigata University,Education
+nititancommercial.com,Niti Tan Commercial,Industrial
+nordstrom.com,Nordstrom,Retail
+northwestern.edu,Northwestern University,Education
+novotelecom.ru,Novo Telcom,ISP
+npcma.ru,Nizhnekamsk Enterprise,Industrial
+ntirety.com,Ntirety,MSP
+nw027.com,Poppulo (Formerly Newsweaver),SaaS
+o2.cz,O2,ISP
+obit.kz,OBIT,ISP
+ocn.ad.jp,NTT,ISP
+octacom.ca,Octacom,MSP
+odoo.com,Odoo,SaaS
+odu.edu,Ohio Dominican University,Education
+ohio.edu,Ohio University,Education
+okayama-u.ac.jp,Okayama University,Education
+okta.com,Okta,SaaS
+o-mx.com,Omedia,Marketing
+one.com,One.com,Web Host
+one.th,One Platform,Email Provider
+one-mail.on.ca,eHealth Ontario,Healthcare
+online.kz,Kazakhtelecom,ISP
+online.net,Scaleway,Email Provider
+online.tj.cn,China Unicom,ISP
+openair.com,Oracle NetSuite OpenAir,SaaS
+opentext.com,OpenText,SaaS
+optimus.si,Optimus IT d.o.o.,MSP
+orange.es,Orange,ISP
+orange.fr,Orange,Email Provider
+orangecustomers.net,Orange,ISP
+orbital.net,Orbital Net,ISP
+oregonstate.edu,Oregon State University,Education
+ori.net,ORI,ISP
+orthodoxws.com,Orthodox Web Solutions,Web Host
+osu.edu,The Ohio State University,Education
+ottcmail.com,Ontario & Trumansburg Telephone Companies,ISP
+outlook.cn,Outlook (China),Email Provider
+outlook.com,Outlook (Personal and Microsoft 365),Email Provider
+ovh.net,OVH,Web Host
+ovh.us,OVH,Web Host
+owt.com,One World Telecommunications,ISP
+ox.ac.uk,Education of Oxford,Education
+oxsus-vadesecure.net,Scaleway,Web Host
+pair.com,Pair Networks,Web Host
+pairdomains.net,Pair Domains,Web Host
+palette-up.jp,Palette UP,Web Host
+panelvps.net,PanelBox,Web Hosting
+parkerinstitute.org,Parker Jewish Institute for Healthcare & Rehabilitation,Healthcare
+paubox.com,Paubox,Email Security
+pd25.com,Salesforce Marketing Cloud (Formerly Pardot),Marketing
+peaknet.net,PeakNet,Industrial
+peopleanswers.com,Infor,SaaS
+pepitrans01.com,Netcore (Formerly Pepipost),SaaS
+pepitrans02.com,Netcore (Formerly Pepipost),SaaS
+perception-point.io,Perception Point,Email Security
+perenso.com,Perenso,Marketing
+perfora.net,IONOS,Web Host
+pfmsys.com,"Professional Flight Management, Inc. (PFM)",Logistics
+pipefy.com,Pipefy Inc,SaaS
+plala.or.jp,Plala,ISP
+playbackmail.com,PlayBackMail,Email Provider
+pldt.net,PLDT,ISP
+plus.pl,Plus,ISP
+pobox.com,Pobox,Email Provider
+pol.ir,ParsOnline,ISP
+pol-online.com,Bangladesh Online,ISP
+poneytelecom.eu,Pony Telecom,Web Host
+porkbun.com,porkbun.com,ISP
+portative.net,Portative Technologies,ISP
+ppe-hosted.com,Proofpoint Essentials,Email Security
+pphosted.com,Proofpoint,Email Security
+prchost.com,PRC Hosting,Web Host
+prempub.com,Premier Publishing,Marketing
+princeton.edu,Princeton University,Education
+principal-it.com,Principal IT,MSP
+privateemail.com,PrivateEmail.com,Email Provider
+privatelayer.com,Private Layer,Web Host
+privatesystems.net,PrivateSystems.net,Web Host
+profitserver.ru,Profitserver,Web Host
+proton.ch,Proton,Email Provider
+protonmail.ch,Proton,Email Provider
+pserver.space,Profitserver,Web Host
+psychz.net,Psychz Networks,Web Host
+ptd.net,PTD,ISP
+pucminas.br,PUC Minas,Education 
+pulkco.com,Pulk & Co,ISP
+pulsetv.com,Pulse TV,Retail
+purdue.edu,Purdue University,Education
+pwuhui.com.tw,Perfect Medical,Healthcare
+qemailserver.com,Qualtrics,SaaS
+qq.com,QQ,Email Provider
+qrc.ca,Quality Respiratory Care,Healthcare
+qth.com,QTH.com,Web Host
+quadax.com,Quadax,Healthcare
+quadranet.com,Quadranet,Web Host
+qvidian.com,Qvidian,SaaS
+rackspace.com,Rackspace,Web Host
+ramsaysante.fr,Ramsay Santé,Healthcare
+raycdjr.com,Ray Chrysler Dodge Jeep RAM,Automotive
+rcn.com,RCN,ISP
+redbird.net,NexGenAccess (Formerly Redbird),ISP
+redexpertos.com,RedExpertos,Web Host
+redirection.net,Redirectionet,Web Host
+regiomed-kliniken.de,REGIOMED-KLINIKEN GmbH,Healthcare
+registeredsite.com,Web.com,Web Host
+regxa.com,Regxa Cloud,Web Host
+rheamedical.org,Rhea Medical Center,ISP
+riberasaludmail.com,Ribera Salud,Healthcare
+riskonnectclearsight.com,Riskonnect ClearSight,SaaS
+ritternet.com,Ritter Communications,ISP
+rmx.de,Retarus GmbH,SaaS
+rootlayer.net,RootLayer LTD.,Web Host
+rsa.com,RSA,Technology
+rsgsv.net,Intuit Mailchimp,Marketing
+rt.ru,RT,Government Media
+rutgers.edu,Rutgers University,Education
+rzone.de,Strato AG,Web Host
+safaricombusiness.co.ke,Safaricom,ISP
+saimanet.kg,Saima Telecom,ISP
+sakura.ne.jp,SAKURA Internet,ISP
+salesforce.com,Salesforce,SaaS
+samanage.com,SolarWinds Service Desk,SaaS
+sandrix.com,Sandrix Technologies,MSP
+sarkor.uz,Sarkor,ISP
+scaledsystems.com,SimpleNet,Web Hosting
+scatair.com,Scatair,Manufacturing
+schmc.ac.kr,Soon Chun Hyang University Medical Center,Healthcare
+scorm.com,SCORM,SaaS
+sdldelivery.com,Specialty Delivery & Logistics,Logistics
+secure.ne.jp,KIDDI,ISP
+secure-mails.com,Tata Communications,SaaS
+securemailserver.ca,securemailserver.ca,Email Provider
+securemx.jp,IIJ SecureMX,Email Security
+securence.com,Securence,Email Security
+secureserver.net,GoDaddy,Web Host
+sendgrid.net,Twilio SendGrid,Marketing
+sendio.com,Sendio,Email Security
+sendoso.com,Sendoso,Marketing
+seqtek.net,SEQTEK,MSP
+servconfig.com,InMotion Hosting,Web Host
+serverdata.net,GoDaddy,Web Host
+servicemail24.de,Arvato Systems,MSP
+service-now.com,ServiceNow,SaaS
+servidoresdns.net,Arsys,Web Host
+shatel.ir,Shatel,ISP
+sheffieldpharma.com,Sheffield Pharmaceuticals,Healthcare
+showpad.com,Showpad,Marketing
+sibyl.com,Sibl Design,MSP
+simpro.com.br,Simpro,Healthcare
+simus.uz,Simus,ISP
+siriustelecom.uz,Sirius Telecom,ISP
+siteprotect.com,SiteMail,Email Provider
+sl-reverse.com,IBM Cloud,PaaS
+smartape.ru,Smart Ape LLC,Web Host
+smartspb.net,Smart Telecom,ISP
+smtp.com,SMTP.com,SaaS
+smtp25.com,Zix,Email Security
+smtp2go.com,SMTP2GO,SaaS
+socialfive.com,Social5,Marketing
+socket.net,Socket,ISP
+sophos.com,Sophos,Email Security
+spamtitan.com,SpamTitan,Email Security
+sparkpostmail.com,SparkPost,Marketing
+spectrum.com,Spectrum,ISP
+speedway.hk,Speedway Travels,Travel
+spglobal.com,S&P Global,Finance
+srvape.com,Smart Ape LLC,Web Host
+stanford.edu,Stanford University,Education
+stargatecommunications.com,X-Link Limited,ISP
+state.co.us,The State of Colorado,Government
+state.ma.us,The State of Massachusetts,Government
+state.ms.us,The State of Missouri,Government
+state.or.us,The State of Oregon,Government
+stellarllc.net,Gardonville Cooperative Telephone Association,ISP
+stewarthowe.com,Newfold Digital,Web Host
+stomabags.com,Stomabags.com,Healthcare
+stonybrook.edu,Stonybrook University,Education
+strategictreasurer.com,Strategic Treasurer,Finance
+stratoserver.net,STRATO,Web Host
+superb.net,CherryRoad (Formerly Superb Internet),Web Host
+sureserver.com,SureSupport LLC,Web Hosting
+swishmail.com,Swishmail,MSP
+syn-alias.com,Synacor,SaaS
+synchronoss.net,Synchronoss,SaaS
+sysaidit.com,SysAid,SaaS
+sysnet.ie,VikingCloud,MSP
+tachc.org,Texas Association of Community Health Centers (TACHC),Healthcare
+takethemameal.com,Take Them A Meal,SaaS
+tanglewoodhealth.com,Tanglewood Medical Supplies,Healthcare
+tctwest.net,TCT,ISP
+teche.net,Uniti,MSP
+telecom.kz,Kazakhtelecom,ISP
+telecom.net.ar,Telecom Argentina,ISP
+telecomitalia.it,TIM,ISP
+telefonica.de,Telef�nica Germany,ISP
+telekom.rs,MTS,ISP
+telepac.pt,SAPO,Email Provider
+telepacific.net,TPx Communications,ISP
+telus.net,TELUS,ISP
+tenders.net,Tenders.net,SaaS
+terra.com,Terra Networks,Web Hosting
+tevapharm.com,Teva Pharmaceuticals,Healthcare
+thechristhospital.com,The Christ Hospital,Healthcare
+thomsonreuters.com,Thomson Reuters,SaaS
+tical.com,Grupo Tical,Logistics
+tidewater.net,Tidewater Telecom,ISP
+tie.cl,Telefónica Internet Empresas S.A.,ISP
+tigerconnect.com,TigerConnect,SaaS
+tim.it,TIM,ISP
+timeweb.ru,Timeweb,Web Host
+tisco.mx,TISCO Networks,MSP
+titan.email,Titan,Email Provider
+titanhq.com,TitanHQ,Email Security
+tix.it,Tuscany Internet eXchange,ISP
+tktelekom.pl,TK Telecom,Healthcare
+tm.net,Mercury Telecom,ISP
+tmc.edu,Truett McConnell University,Education
+tmcz.cz,T-Mobile,ISP
+tmddedicated.com,TMDHosting,Web Host
+tohoku.ac.jp,Tohoku University,Education
+tohoyk.co.jp,Toho Pharmaceutical,Healthcare
+tosoh.co.jp,Tosoh,Industrial
+tps.uz,TPS Telecom,ISP
+tradeindia.com,TradeIndia,SaaS
+transtelecom.net,Trans Telecom,ISP
+trendmicro.com,Trend Micro,Email Security
+trendmicro.eu,Trend Micro,Email Security
+trivenet.it,Trivenet Telecomunicazioni,ISP
+truemail.co.th,"True Internet Co., Ltd.",ISP
+ttk.ru,Joint Stock Company TransTeleCom,ISP
+tufts.edu,Tufts University,Education
+twu.edu,Texas Woman's University,Education
+uab.edu,The University of Alabama at Birmingham,Education
+ubc.ca,The University of British Columbia,Education
+uchealth.com,UC Health,Healthcare
+ucla.edu,UCLA,Education
+uclouvain.be,UCLouvain,Healthcare
+ucom.am,Ucom LLC,ISP
+ufanet.ru,Ufanet,ISP
+ufl.edu,University of Florida,Education
+u-fukui.ac.jp,University of Fukui,Education
+uhc.com,United Healthcare,Healthcare
+uhu.es,University of Huelva,Education
+uic.edu,University of Illinois Chicago,Education
+uky.edu,University of Kentucky,Education
+ultravision.com.mx,Ultracel,ISP
+umich.edu,University of Michigan,Education
+umin.ac.jp,University Hospital Medical Information Network (UHIN) of Japan,Healthcare
+umn.edu,University of Minnesota,Education
+unifiedlayer.com,UnifiedLayers,Web Host
+uninet-ide.com.mx,Telmex,ISP
+unity-health.org,Unity Health,Healthcare
+univac.com.sg,Univac,Industrial
+untd.com,"United Online, Inc.",ISP
+uoeh-u.ac.jp,"University of Occupational and Environmental Health, Japan",Education
+uol.com.br,UOL - UNIVERSO ONLINE S/A,Web Host
+uscomputers.com,U.S. Computer Corporation,MSP
+usp.br,University of São Paulo,Education
+ussignalcom.net,US Signal,MSP
+utah.edu,University of Utah,Education
+u-tokai.ac.jp,Toki University,Education
+u-tokyo.ac.jp,University of Tokyo,Education
+uvm.edu,University of Vermont,Education
+uw.edu,University of Washington,Education
+va.gov,U.S. Department of Veterans Affairs,Government
+vanwerthospital.org,Van Wert Health,Healthcare
+vdonsk.ru,Microel,ISP
+vectranet.pl,Vectra,ISP
+vedco.com,Vedco,Healthcare
+vegans.it,vegan/s,MSP
+verginia.edu,University of Virginia,Education
+verizon.net,Verizon,ISP
+verizonbusiness.com,Verizon Business,ISP
+vicc.co,Venco Imtiaz Contracting Co,Construction
+videotron.ca,Videotron,ISP
+videotron.com,Videotron,ISP
+viecuri.nl,VieCuri,Healthcare
+viettel.vn,Viettel,ISP
+virginia.edu,The University of Virginia,Education
+virtua.com.br,Virtua Brizil,Marketing
+virtualhosting.hk,UDomain,Web Host
+visitmiddlesex.ca,Middlesex County,Government
+vnpt.vn,VNPT,ISP
+vtext.com,Verizon SMS,ISP
+vulcnmold.com,VulcanMold,Industrial
+vwhs.org,Wally-Wide Health,Healthcare
+wadax.ne.jp,WADAX,Web Host
+wadax-sv.jp,WADAX,Web Host
+washington.edu,University of Washington,Education
+wasip.com,WASIP Ltd.,Healthcare
+wbhcp.com,Williams Bros Pharmacy,Healthcare
+web-hosting.com,Namecheap,Web Host
+webhostingireland.ie,Hosting Ireland,Web Host
+webpal.com,WebPal,Web Hosting
+webzineonline.com,Webzine Online,Marketing
+wescor.com,Wescor Inc.,Healthcare
+westdc.net,"WestHost, Inc.",Web Host
+what-if.com,The Imagination Factory,MSP
+wightman.ca,Wrightman Telecom,ISP
+windstream.net,Windstream,ISP
+wise.net.lb,WISE,ISP
+wizmoworks.com,Wizmo,MSP
+wntellecom.net.br,WN Tellecom,ISP
+wordpress.com,Wordpress.com,Web Host
+wpx.ne.jp,wpX Speed,Web Hosting
+wpxhosting.com,WPX Hosting,Web Host
+wsh.care,The Woodlands Specialty Hospital,Healthcare
+wustl.edu,Washington University in St. Louis,Education
+xbiz.ne.jp,Xserver,Web Host
+xceleratorsoftware.com,Key Software Systems Xcelerator,SaaS
+xecu.net,Xecunet,MSP
+xinet.com.mx,Xinet,MSP
+xmission.com,XMission,SaaS
+xrea.com,XREA,Web Host
+xserver.jp,Xserver,Web Host
+yahoo.co.jp,Yahoo Japan,Email Provider
+yahoo.com,Yahoo,Email Provider
+yamaguchi-u.ac.jp,Yamaguchi University,Education
+yamanashi.ac.jp,Yamanashi University,Education
+yelpcorp.com,Yelp,Social Media
+yourconnect.com,"Yourconnect Co., Ltd.",Web Host
+your-server.de,Hetzner,Web Host
+yurekpharmacy.com,Yurek Pharmacy,Healthcare
+z.com,Z.com,Web Hosting
+zaansmc.nl,Zaans Medical Center,Healthcare
+zare.com,Zare,Web Host
+zdsys.com,Zendesk,SaaS
+zixcorp.com,Zix,Email Security
+zixsmbhosted.com,Zix,Email Security
+zixworks.com,Zix,Email Security
+zoho.com,Zoho,SaaS
+zoho.in,Zoho,SaaS
+zohocorporation.com,Zoho,SaaS
+zoneedit.com,Zoneedit,Web Host
+zsttk.ru,TTK,ISP
+zyner.net,Zyner,Email Provider
+zyner.one,Zyner,Email Provider
+zyner.org,Zyner,Email Provider