AS70

AS70 is a legacy allocation registered under ARIN to the National Library of Medicine (org NLM-Z), a U.S. federal agency within NIH/HHS, and RFC 1166 (1990) labeled it "NLM-GW / National Library of Medicine," consistent with the current holder. NLM describes itself as the world's largest biomedical library, a center of information innovation since its founding in 1836, whose collections are searched billions of times a year; it operates major public services — PubMed, MEDLINE, MeSH, and UMLS — from its 130.14.0.0/16 (NLM-ETHER) block. The ASN is minimally routed: a May 2026 traceroute reached AS70 at 130.14.130.17, indicating it is active in routing, but its globally-originated prefix count is small and partly served via upstream NIH (AS19050). The ARIN ASN RegDate is 1986-04-14 (the NLM-Z org RegDate of 2024-09-27 is a registry refresh; an earlier NLM org record showed 1984-02-13). For triage this is a stable federal-government allocation tied to NLM/NIH biomedical infrastructure. No notable public abuse signal was found as of June 2026.

Operator

National Library of Medicine (ARIN OrgId NLM-Z; part of NIH/HHS) [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN ASN RegDate 1986-04-14 (org NLM-Z RegDate 2024-09-27 is a registry refresh; earlier NLM record 1984-02-13) [Confirmed]

Org status

active (federal agency)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-08; clean government network — whois.ipip.net

Network & routing

Network type

government (US federal — NIH/HHS) [Confirmed]

Size

minimally routed; low global origination, partly served via NIH AS19050; 130.14.0.0/16 (NLM-ETHER) — bgpview.io / IPinfo (2026-06)

Routing/peering

active in routing (May 2026 traceroute to 130.14.130.17); upstream NIH AS19050; RPKI unknown — IPinfo

Notable usage

NLM — world's largest biomedical library (founded 1836); operates PubMed, MEDLINE, MeSH, UMLS from 130.14.0.0/16; RFC 1166 "NLM-GW" — nlm.nih.gov

Related ASNs

AS19050 (NIH — upstream/sibling federal network) [Likely]

Analyst note

A stable federal-government allocation tied to NLM/NIH biomedical infrastructure; active in routing but low global origination.