AS372

AS372 is a legacy autonomous system number registered under ARIN to the U.S. National Aeronautics and Space Administration (NASA), organization handle NASA-Z. The ASN dates to the early federal-agency Internet era: it was allocated on 1989-07-10 per ARIN's RDAP autnum top-level registration event, and its historical WHOIS designation NSN-AMES-AS ties it to the 1980s-era NASA Science Network administered from NASA Ames Research Center — not to be confused with NASA's unrelated modern "Near Space Network" spacecraft-communications program that shares the acronym. Unlike a dormant legacy allocation, AS372 is actively routed today: RIPEstat shows five announced IPv4 prefixes (192.149.129.0/24, 192.149.144.0/24, 129.166.6.0/23, 192.77.77.0/24, and 192.149.130.0/23, roughly 1,792 addresses) with full v4 RIS visibility (323/323 peers) and no IPv6 announcements. CAIDA characterizes it as a stub AS: customer cone of one (itself), AS degree of a single provider and zero peers/customers, AS rank near 29,561, and no IXP membership. Registrant and contact addresses cluster around Marshall Space Flight Center in Huntsville, Alabama and Johnson Space Center in Houston, Texas, consistent with CAIDA's Alabama geolocation centroid. No dedicated public NASA page documents AS372 or a peering policy for it, and there is no PeeringDB entry — unlike NASA's other ASNs (AS24, AS297). No notable public abuse signal was found as of 2026-07-02 (not in Spamhaus ASN-DROP, AbuseIPDB-adjacent aggregators, or NANOG archives), consistent with a first-party government/research network.

Operator

National Aeronautics and Space Administration (NASA); ARIN org handle NASA-Z [Confirmed] — ARIN RDAP autnum (rdap.arin.net/registry/autnum/372), ipinfo.io/AS372

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP autnum, RIPEstat

Allocated

1989-07-10 (ARIN RDAP autnum TOP-LEVEL registration event — a first-party RIR fact, NOT a nested-entity/POC date); last changed 2024-12-16 [Confirmed by A2 + A3] — ARIN RDAP autnum top-level events[]

AS name (WHOIS)

NSN-AMES-AS — historical NASA Science Network designation (administered from NASA Ames); distinct from the modern unrelated "Near Space Network" [Likely] — bgp.potaroo.net/cidr/autnums.html, nasa.gov/communicating-with-missions/nsn/

Contacts

abuse@nasa.gov (abuse POC); noc@nisn.nasa.gov (NISN NOC); dns@nasa.gov (technical, DDI Operations, MSFC) [Confirmed] — ARIN RDAP entities, RIPEstat abuse-contact

Org status

active U.S. federal agency (NASA); ASN registration remains Active in ARIN with contacts updated as recently as 2025; no standalone current public network/peering documentation for AS372 specifically [Confirmed active; Likely for "folded into broader NASA IT infra"] — ARIN RDAP

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not in Spamhaus ASN-DROP, AbuseIPDB-adjacent aggregators, or NANOG archives; search-based, not a live authenticated feed query

Network & routing

Network type

legacy U.S. federal government / research-agency network; not a commercial ISP, content, or transit provider [Likely] — ARIN RDAP, bgp.potaroo.net/cidr/autnums.html

Size

5 announced IPv4 prefixes (~1,792 addresses), 0 IPv6; customer cone = 1 ASN (itself), 5 prefixes, 1,792 addresses [Confirmed] — RIPEstat (stat.ripe.net/AS372), CAIDA AS Rank (api.asrank.caida.org/v2/restful/asns/372)

Routing/visibility

fully visible in v4 (323/323 RIS peers), 0/322 in v6 (no IPv6 announced); first seen in routing 2003-01-18 (RIS window, predates true first announcement) [Confirmed] — RIPEstat routing-status

Peering/topology

CAIDA degree = 1 provider / 0 peers / 0 customers (stub AS); the upstream provider ASN is not named in the CAIDA payload — Unknown, not fabricated [Confirmed for degree; upstream identity Unknown] — CAIDA AS Rank

Peering policy

Unknown — no PeeringDB entry for AS372 and no official NASA peering-policy page found (NASA's AS24/AS297 do have PeeringDB presence) [Confirmed as not-found] — peeringdb.com/asn/372, peeringdb.com/asn/24, peeringdb.com/asn/297

RPKI

Unknown — not queried in this pull (RIPEstat rpki-validation requires a --prefix arg that was not supplied); no ROA/validity data retrieved [Unknown]

AS rank (CAIDA)

29,561; CAIDA also marks it a "clique" member (unusual for a degree-1 stub — recorded as-is from source, not independently reconciled) [Confirmed as reported] — CAIDA AS Rank

Geo footprint

United States; CAIDA centroid ~32.92, -85.01 (Alabama / Marshall Space Flight Center); RDAP contacts in Huntsville AL (MSFC) and Houston TX (JSC) [Confirmed] — CAIDA AS Rank, ARIN RDAP

Related ASNs

AS297 (NASA — AS372 is a member of the AS297:AS-CONE AS-SET on RADB); AS24 (NASA) [Likely] — bgp.he.net/irr/as-set/AS297:AS-CONE, peeringdb.com/asn/297

IXP membership

none reported (CAIDA ixp field null) [Confirmed] — CAIDA AS Rank

Analyst note

Actively-routed legacy NASA stub AS. allocated_date recorded from the autnum TOP-LEVEL registration event (1989-07-10) confirmed by two angles; nested POC/entity registration dates (2002–2025) in the RDAP payload are decoys and were excluded. Upstream provider identity, RPKI posture, and peer sample left Unknown rather than fabricated.