Classify reverse DNS map: next 5000 unmapped MMDB ASN domains (#756)

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Continuing the long-tail sweep toward complete ASN-domain coverage. This
batch's candidates each represent only 2,048-3,072 IPv4 addresses (smaller
than batch 6's 3K-6K range) so by-weight gains are diminishing, but each
classified operator is one more small ISP / web host the project can name
in DMARC reports.

- 2,148 added to base_reverse_dns_map.csv (ISP 1,605, Web Host 236,
  Education 126, Government 56, MSP 46, Finance 43, Healthcare 36).
- 2,852 added to known_unknown_base_reverse_dns.txt — homepages that were
  parked / Cloudflare-challenged / generic-server-test pages, in
  obscure-language without telecom-keyword cognates the classifier
  recognized, or rows whose WHOIS / MMDB as_name / homepage couldn't
  combine into two corroborating sources.

ASN-domain coverage of the bundled IPinfo Lite MMDB after this batch:
  - by domain count:  14,826 / 63,993  (23.17%, up from 19.81%)
  - by IPv4 weight:   98.01%           (up from 97.85%)

Same classifier as batch 6 (no new code).

Co-authored-by: Sean Whalen <seanthegeek@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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This commit is contained in:

Sean Whalen

2026-05-07 12:59:16 -04:00

committed by GitHub

co-authored by Sean Whalen Claude Opus 4.7

parent 7ef153b4da

commit 4446702b84

2 changed files with 5000 additions and 0 deletions

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parsedmarc/resources/maps/base_reverse_dns_map.csv

+2148

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parsedmarc/resources/maps/known_unknown_base_reverse_dns.txt

+2852

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