AS466

AS466 is a legacy autonomous system number that falls within ARIN's bulk-assigned block AS379–AS508 ("AFCONC-BLOCK1-AS"), registered to Air Force Systems Networking (ARIN org handle 7ESG) — a U.S. Air Force / Department of Defense internal network organization, not a commercial operator. AS466 has no individually-named RDAP object; a direct query for it resolves to the shared 130-ASN block record, whose administrative, technical, and abuse point of contact is now handled by DISA Columbus rather than the Air Force directly. The block's ARIN RDAP top-level events show a registration date of 1989-08-04 and a last-changed date of 2008-06-06 — genuine first-party RIR facts that apply to every ASN in the range, including AS466, and are recorded here rather than nulled. Routing-wise, AS466 is dormant: RIPEstat and CAIDA agree it announces zero IPv4/IPv6 prefixes today, has zero visible peers or upstreams, and its CAIDA customer cone is a singleton (itself, 0 prefixes, 0 addresses). It was historically announced — first seen originating 132.55.0.0/16 in 2001, last seen originating a /23 in early 2020 — but has carried no BGP visibility since. No notable public abuse signal was found as of 2026-07-10; a "bogon" annotation on bgp.he.net reflects a heuristic bogon-list classification of a legacy unrouted prefix, not an abuse indicator.

Operator

Air Force Systems Networking (ARIN org handle 7ESG); U.S. Air Force/DoD internal network organization, currently administered by DISA Columbus [Confirmed] — https://rdap.arin.net/registry/autnum/466

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), https://stat.ripe.net/AS466

Allocated

1989-08-04 (ARIN RDAP autnum top-level "registration" event, for the shared block AS379–AS508 that contains AS466 — AS466 has no standalone RDAP object); last changed 2008-06-06 (top-level "last changed" event) [Confirmed] — https://rdap.arin.net/registry/autnum/466, corroborated by a third-party ASN lookup citing the same 1989-08-04 date (https://ipgeolocation.io/browse/asn/AS466). Note: the nested registrant-org entity "7ESG" separately shows its own registration date of 2008-06-05 — this is a decoy org-record date, not the block's allocation date, and was not used.

Org status

Active per ARIN registry status; U.S. government/military org; contact/admin function currently performed by DISA (Defense Information Systems Agency), Columbus office, on behalf of the Air Force [Confirmed] — https://rdap.arin.net/registry/autnum/466

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil, +1-844-347-2457 ext. 2; registrant address 501 East Moore Dr. Bldg 884 Rm 1100, Gunther Annex, Maxwell AFB, AL 36114, US [Confirmed] — https://rdap.arin.net/registry/autnum/466

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-10 — not on the Spamhaus ASN-DROP text mirror, no NANOG archive incident mentions, no general blocklist/abuse-aggregator hits found; direct query to Spamhaus's ASN inspection page returned HTTP 403 and could not be verified live. bgp.he.net's "announces bogons" annotation reflects a heuristic bogon-list classification of a historically-announced, now-unrouted legacy prefix — not an indication of malicious activity

Network & routing

Network type

U.S. government/military (Department of Defense, Air Force) internal enterprise network numbering block; non-commercial, closed government use — not a public ISP or transit network [Confirmed] — https://rdap.arin.net/registry/autnum/466

Size

dormant — 0 currently-announced IPv4 prefixes and 0 IPv6 prefixes; CAIDA customer cone is a singleton (1 ASN = itself, 0 prefixes, 0 addresses); historically announced up to 132.55.0.0/16 (65,536 IPs, first seen 2001-09-26) before going dark [Confirmed] — https://stat.ripe.net/AS466, https://api.asrank.caida.org/v2/restful/asns/466. A third-party aggregator (ipgeolocation.io) separately reports "1,534 IP addresses active," which conflicts with the live RIPEstat/CAIDA zero figures — flagged as a likely stale or differently-scoped estimate, not treated as authoritative [Likely]

Routing/peering

NOT currently announced — 0 of 326 v4 RIS peers and 0 of 321 v6 RIS peers see it; CAIDA AS degree is 0 (customer/peer/provider all 0); last seen originating 139.241.12.0/23 on 2020-02-27 per RIPEstat (bgp.he.net separately records last-seen 2020-03-01 on prefix 139.241.84.0/23 — a one-day/prefix discrepancy between the two third-party sources, noted as a range rather than reconciled) [Confirmed] — https://stat.ripe.net/AS466, https://bgp.he.net/AS466. No published peering policy exists; this is a closed DoD network, not one that solicits public peering [Confirmed]

RPKI

not assessable at the ASN level without a specific prefix (RIPEstat rpki-validation requires --prefix and was skipped); consistent with AS466 having no current announcements to validate [Unknown] — https://stat.ripe.net/AS466

Notable usage

part of the U.S. Air Force's internal DoD network address space (block AS379–AS508, "AFCONC-BLOCK1-AS"); no evidence of any commercial or public-facing usage [Confirmed] — https://rdap.arin.net/registry/autnum/466

Related ASNs

member of the shared block AS379–AS508 (~130 ASNs) registered as a unit to Air Force Systems Networking [Confirmed] — https://rdap.arin.net/registry/autnum/466

Analyst note

AS466 has no individual RDAP object — the query resolves to the shared AS379–AS508 block record, so its allocated/last-changed dates are genuine block-level RIR facts rather than a per-ASN registration event. Currently unannounced (dormant since ~2020), DoD-internal, no commercial footprint, no public abuse signal.