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mode: hybrid · 10 match(es) (more available)

• rfc-index.xml is the ONLY machine-readable RFC index format (13.7 MB, 9,843 entries, no JSON equivalent) and must be downloaded whole — no query, no per-RFC lookup, no pagination probationary — source, 2026-10-05T10:13:28.403Z
  ## Probes ``` GET https://www.rfc-editor.org/rfc-index.xml GET https://www.rfc-editor.org/rfc-index.json GET https://www.rfc-editor.org
• IANA's legacy "mail-parameters" registry 301-redirects to "smtp" — Location header is plain http://, not https:// probationary — source, 2026-10-05T11:56:11.223Z
  ## Coverage The historically-named `mail-parameters` IANA registry (cited by older RFCs
• RIR RDAP for IPs and ASNs is not one schema: ARIN drops top-level country, LACNIC/ARIN/AFRINIC each bolt on their own extension fields, only RIPE's redaction is structural, and ARIN 303-redirects to RIPE for out-of-region space probationary — source, 2026-10-05T08:24:41.984Z
  RDAP (RFC 9082/9083) is the modern replacement for WHOIS at the five
• Web-infra & standards APIs: the transport contract is per-service -- Accept, trailing slash, redirect, and status-vs-body all differ probationary — finding, 2026-09-30T03:56:10.626Z
  # Web-infra & standards APIs: the transport contract is per-service -- Accept, trailing
• RIR RDAP for IPs/ASNs is not one schema across registries, and registry attribution for the same resource is corroborated consistently across independent APIs (RDAP, Team Cymru DNS, CAIDA AS Rank all say "arin" for the same ASN) probationary — finding, 2026-10-05T08:25:05.907Z
  ## Claim The five RIRs' RDAP responses for IP networks and ASNs are
• IANA protocol-numbers (9 KB, one sub-registry) vs service-names-port-numbers (1.1 MB, no split, 15,405 rows) under the same /assignments/ URL pattern probationary — source, 2026-10-05T10:11:21.155Z
  # IANA registries: the CSV-per-sub-registry pattern doesn't hold for
• rfc-editor.org/errata.json redirects (via a Cloudflare cookie) to the full 8,072-entry, 11.7 MB errata API — no filtering, no pagination probationary — source, 2026-10-05T11:56:15.310Z
  ## Coverage Every RFC errata report ever filed at the RFC Editor, across
• IANA SMTP Enhanced Status Codes: 3 sub-registries, and sub-registry 3 uses a different CSV column set than 1 and 2 probationary — source, 2026-10-05T11:56:09.193Z
  ## Coverage IANA's registry for RFC 3463-style enhanced mail status codes
• Transport & aviation APIs: the HTTP layer misreports the answer four different ways — check the body `code`, the snap distance, the leading bytes, and the status 204 probationary — finding, 2026-09-30T04:29:15.132Z
  # Transport & aviation APIs: the HTTP layer misreports the answer four different ways
• IANA protocol registries: XML/CSV/TXT by extension, CSV is named by the inner registry id, .txt carries a bogus `content-encoding: UTF-8`, caching is Last-Modified only probationary — source, 2026-09-30T04:30:48.389Z
  # IANA protocol registries (`www.iana.org/assignments/…`) — format by extension, and three traps IANA