AS23

AS23 is a legacy single-digit allocation registered under ARIN to the National Aeronautics and Space Administration (org record at NASA's Office of the CIO, Marshall Space Flight Center), and it is one of the two genuine low-number NASA ASNs — distinct from AS22, which is the U.S. Navy. RFC 1020/1166 list AS23 as "RIACS-AS," the Research Institute for Advanced Computer Science at NASA Ames Research Center. The key triage point is that the ASN is currently dormant: it originates zero IPv4 and zero IPv6 prefixes and is not visible in the global routing table, so it should be treated as a parked legacy government allocation. It should not be swapped with AS24, which is the active NASA Ames ASN of the pair. The ARIN ASN RegDate of 1984-08-02 is the registry date (the org record's 2024 refresh is not the original assignment, and any 1970-01-01 value on third-party mirrors is a Unix-epoch placeholder, not real). No notable public abuse signal was found as of June 2026.

Operator

National Aeronautics and Space Administration (ARIN OrgId NASA-Z; Office of the CIO, MSFC, AL) [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN ASN RegDate 1984-08-02 (registry date; org NASA-Z RegDate 2024-12-13 is a refresh; 1970-01-01 on mirrors = epoch placeholder, NOT real); original assignment Unknown

Org status

active organization, dormant ASN

Security/abuse context (NEUTRAL, DATED)

not announcing; no notable public abuse signal found as of 2026-06-08 — bgpview.io

Network & routing

Network type

government / civil space agency [Confirmed]

Size

0 IPv4, 0 IPv6 — dormant (registered but not announcing) — bgp.tools (2026-06)

Routing/peering

none currently announced; RPKI none (no announcements) — bgp.tools

Notable usage

[historical] RFC 1020/1166 "RIACS-AS" = Research Institute for Advanced Computer Science, NASA Ames Research Center. [current] NASA-held legacy ASN, dormant — nasa.gov

Related ASNs

NASA operates many ASNs incl. AS24, AS21556 (NASA Ames E-root), AS1843, AS270, AS297 [Confirmed]

Analyst note

A dormant NASA legacy ASN — present in the registry but absent from the routing table; triage as a parked legacy government allocation. Do NOT swap with AS24 (the active NASA ASN of the pair).