Autonomous system
AS70 NLM-GW
Unclassified ARIN
Summary
National Library of Medicine
government research legacy
The network of the US National Library of Medicine (NLM-GW), part of the National Institutes of Health.
What it's used for
- Operating the world's largest biomedical library and services such as PubMed and MEDLINE.
Notable
- A US federal government / research agency network, not a commercial host. The low AS number reflects an allocation from the internet's earliest years.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 66 prefixes · 65.54K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 68 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS70- Registry name
- NLM-GW
- Registrant
- National Library of Medicine
- Abuse contact
- abuse@nlm.nih.gov
- Registered
- 1986-04-14
- Last changed
- 2024-10-04
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 67 valid, 0 with no ROA
- ROAs
- 4 authorising AS70
- ASPA
- no ASPA record
- IRR
- 100% registered · 67 of 67 announcements
- Route objects
- 6 naming AS70
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere