AS464

AS464 is a legacy autonomous system number registered under ARIN within the AFCONC-BLOCK1-AS block, a large consecutive range spanning AS379 through AS508 that ARIN's RDAP service returns as a single autnum record when queried for any member ASN, including 464. The block is registered to "Air Force Systems Networking" (registrant handle 7ESG), based at 501 East Moore Drive, Building 884, Room 1100, Gunther Annex, Maxwell Air Force Base, Alabama — a U.S. Air Force installation. Third-party ASN aggregators (ipinfo.io, ipgeolocation.io) commonly associate ASNs in this range with the 754th Electronic Systems Group, though that specific unit attribution is not corroborated directly in the ARIN RDAP record itself and should be treated as a secondary-source characterization rather than a first-party fact. The administrative/abuse point of contact is a DISA-Columbus registration mailbox, reflecting the Defense Information Systems Agency's role in managing DoD-associated ARIN resources. Operationally, AS464 is dormant: every routing data source consulted (RIPEstat announced-prefixes, RIPEstat routing-status, CAIDA ASRank) agrees it announces zero IPv4 and zero IPv6 prefixes, has zero visible RIS peers out of 325 (v4) and 321 (v6) peers, and shows zero AS-level relationships (customer, peer, provider all 0) in CAIDA's topology data. Its CAIDA AS rank of 79,459 and singleton customer cone (itself only, 0 prefixes, 0 addresses) are consistent with an unrouted, reserved government address block rather than an actively operated network. RPKI posture cannot be assessed because there are no announced prefixes to validate against. No operator-official website, peering policy, or PeeringDB record exists for this ASN, which is expected for a closed, non-commercial military network. No notable public abuse signal was found as of July 2026, though this reflects a search-coverage limitation (raw Spamhaus ASN-DROP and NANOG archive contents were not directly queryable) as much as a substantive clean result.

Operator

Air Force Systems Networking (registrant handle 7ESG); block registered under U.S. Air Force / DoD, administered via DISA-Columbus [Confirmed] — ARIN RDAP autnum record

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP; RIPEstat abuse-contact-finder (authoritative_rir: arin)

Allocated

1989-08-04 (ARIN RDAP top-level registration event on the AS379–AS508 block containing AS464); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum top-level events (https://rdap.arin.net/registry/autnum/464)

Org status

active per ARIN RDAP autnum status field (status: active) for the AS379–508 block [Confirmed] — ARIN RDAP

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil (REGIS10-ARIN, DISA-Columbus, 300 North James Road, Whitehall, OH 43213); registrant HQ 501 East Moore Dr. Bldg 884 Rm 1100 Gunther Annex, Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP; RIPEstat abuse-contact-finder

Website

Unknown — no operator-official public website found; expected for a closed military network [Confirmed] — absence confirmed via web search

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-05 — Spamhaus ASN-DROP, NANOG archives, and general abuse-feed web searches returned no ASN-specific incident reports; absence-of-evidence limited by search-only (non-API) retrieval, not a confirmed clean-list status

Network & routing

Network type

U.S. Department of Defense / U.S. Air Force internal network infrastructure; not a public transit or content network; no PeeringDB presence [Likely] — ARIN RDAP; absence of a PeeringDB/AS464 record

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status; CAIDA ASRank (2026-07)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/325 v4, 0/321 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers visible in any source [Confirmed] — RIPEstat routing-status; CAIDA ASRank API

RPKI

not assessable — AS464 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation explicitly skipped the query for lack of a prefix parameter [Confirmed] — RIPEstat rpki-validation response

Notable usage

Unknown from operator-official sources; third-party aggregators loosely associate the AS379-508 block with the 754th Electronic Systems Group, but this is not corroborated in the RDAP record itself [Unknown] — ipinfo.io/AS464, ipgeolocation.io/browse/asn/AS464

ASN range context

AS464 falls within ARIN's consecutively-registered block AS379–AS508 (handle AS379, name AFCONC-BLOCK1-AS); ARIN does not expose a row unique to AS464 within that block — the block-level record is the authoritative registration record covering it [Confirmed] — ARIN RDAP

Analyst note

Dormant DoD/USAF-block ASN with no active routing footprint in any consulted source; RDAP resolves at the block level (AS379-AS508), not uniquely to AS464.