Autonomous system detail

AS41

Not announced

Operated by AS41 - National Aeronautics and Space Administration.

Summary

// analyst note
Current ARIN as-name is 'AS41' ('AMES' is the historical RFC-1020 label). A confirmed-dormant NASA legacy number (silent since 2019); current NASA routing is on other ASNs (e.g., AS270).
// security note
NEUTRAL/DATED: no notable public abuse signal found as of 2026-06-09; dormant since 2019.
IPv4 prefixes
0
~0 addresses
IPv6 prefixes
0
—
Peer networks
0
0 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: High

AS41 is a legacy allocation registered under ARIN to the National Aeronautics and Space Administration, with the current ARIN-registered as-name "AS41"; it was historically labeled "AMES" (NASA Ames Research Center) in RFC 1020 (1987). The current holder matches that lineage, but the ASN is confirmed dormant: Hurricane Electric records that AS41 has not been visible in the global routing table since August 1, 2019, with an average AS path length of zero. Its historical prefixes (128.102.0.0/16, 134.12.0.0/17, 134.12.192.0/21, 143.232.0.0/16) are no longer announced, it currently originates zero prefixes, and the single observed peer is AS270 (also NASA). For triage this is a confirmed-dormant NASA legacy number, silent since 2019; current NASA routing is on other ASNs such as AS270. The ARIN ASN RegDate is 1985-02-20. No notable public abuse signal was found as of June 2026.

Operator
National Aeronautics and Space Administration (ARIN) [Confirmed] — ARIN RDAP
Country / RIR
US, ARIN [Confirmed]
Allocated
ARIN ASN RegDate 1985-02-20 (updated 2024-12-16) [Confirmed] — ARIN RDAP
Org status
organization active, ASN dormant (silent since 2019-08-01)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-09; dormant since 2019 — bgp.he.net

Network & routing

Network type
government / civil space agency [Confirmed]
Size
0 prefixes — dormant (not visible since 2019-08-01) — bgp.he.net (2026-06)
Routing/peering
none currently announced; 1 observed peer AS270 (also NASA); RPKI none — bgp.he.net
Notable usage
[historical, RFC 1020] as-name then "AMES" = NASA Ames Research Center; historical prefixes incl. 128.102.0.0/16, 143.232.0.0/16 (no longer announced); current ARIN as-name is "AS41" — nasa.gov
Related ASNs
AS270 (also NASA); broader NASA ASN family [Confirmed]
Analyst note
Current ARIN as-name is "AS41" ("AMES" is the historical RFC-1020 label). A confirmed-dormant NASA legacy number (silent since 2019); current NASA routing is on other ASNs (e.g., AS270).
[ 02 ] — Announced prefixes

What this network routes.

0 prefixes total · RIPEstat data · cached, not real-time
// IPv4 prefixes0
No IPv4 prefixes announced.
// IPv6 prefixes0
No IPv6 prefixes announced.
[ 03 ] — Notable peers & upstreams

Who it talks to.

0 observed neighbours
Neighbour data unavailable from public BGP collectors.