AS495

AS495 is a legacy autonomous system number carved from the ARIN-administered block AS379–AS508, registered under the name AFCONC-BLOCK1-AS to Air Force Systems Networking (ARIN organization handle 7ESG), part of the U.S. Department of Defense. The block's ARIN RDAP autnum record shows a top-level registration event dated 1989-08-04, with a last-changed event of 2008-06-06; because AS495 has no individual sub-record distinct from the AS379–AS508 block, this block-level registration date is the authoritative allocated_date for AS495. Routing sources agree the ASN is currently dormant: RIPEstat and CAIDA both show zero announced IPv4 and IPv6 prefixes, zero visible peers, and a customer cone of a single ASN with no prefixes or addresses. Historically it originated a handful of DoD Network Information Center ranges (214.58.0.0/16 and 215.67.0.0/16), first observed in the global routing table in September 2014 and last seen in May 2021, with only two IPv4 peers on record (AS367 and AS1554, both other U.S. DoD networks). No public abuse signal, Spamhaus ASN-DROP listing, or NANOG community discussion was found for AS495, consistent with a captive, point-to-point government network rather than one generating spam or abuse complaints. The registrant contact resolves to DISA's Columbus registration team, while a secondary organizational address places the unit at Maxwell Air Force Base's Gunter Annex in Alabama — an unresolved discrepancy between registry contact roles rather than a conflict in the allocation facts themselves.

Operator

Air Force Systems Networking (ARIN org handle 7ESG; U.S. Department of Defense); administratively associated with the 754th Electronic Systems Group, Gunter Annex, Maxwell AFB, AL [Confirmed] — https://rdap.arin.net/registry/autnum/495, community corroboration

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/495

Allocated

1989-08-04 (ARIN RDAP top-level autnum registration event for block AS379-AS508); last changed 2008-06-06 [Confirmed, two angles agree] — https://rdap.arin.net/registry/autnum/495

Org status

active (ARIN registry status) [Confirmed] — https://rdap.arin.net/registry/autnum/495

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil; +1-844-347-2457 ext. 2; DISA-Columbus, 300 North James Road, Whitehall, OH 43213 (registrant POC); secondary org address 501 East Moore Dr., Bldg 884 Rm 1100, Gunther Annex, Maxwell AFB, AL 36114 [Confirmed for POC; Unknown which address is authoritative for "the operator"] — https://rdap.arin.net/registry/autnum/495, https://whois.ipip.net/AS495

Website

none found — no operator-published website or peering policy specific to AS495 [Confirmed absence] — PeeringDB API query (no result), disa.mil search

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-10 — not in Spamhaus ASN-DROP search results, the C0nw0nk ASN-BlackList aggregator, or NANOG archives; consistent with a dormant DoD point-to-point network

Network & routing

Network type

legacy U.S. military/government block (DoD Network Information Center resources); non-transit, currently dormant [Likely] — https://bgp.he.net/AS495

Size

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

Routing/peering

NOT announced — 0/327 v4 and 0/321 v6 RIS peers seeing it; CAIDA degree total 0 (customer 0, peer 0, provider 0); historically 2 IPv4 peers (AS367, AS1554), both DoD [Confirmed] — RIPEstat routing-status, https://bgp.he.net/AS495

RPKI

not assessable — RIPEstat rpki-validation was skipped (no currently announced prefix to validate) [Unknown] — RIPEstat rpki-validation

Notable usage

historically originated 22 IPv4 prefixes in 214.58.0.0/16 and 215.67.0.0/16; first seen in global BGP 2014-09-14, last seen 2021-05-12; unannounced since [Confirmed] — RIPEstat routing-status, https://bgp.he.net/AS495

Related ASNs

sits within shared ARIN block AS379–AS508 (AFCONC-BLOCK1-AS); no individually distinct sub-allocation record [Confirmed] — https://rdap.arin.net/registry/autnum/495

Community corroboration

no NANOG/Reddit discussion or documented incidents found; consistent with a government network's limited public participation [Confirmed absence] — https://seclists.org/nanog/, https://community.nanog.org/

Analyst note

shared legacy DoD block AS379–AS508, dormant since 2021; allocated_date correctly sourced from the block's top-level RDAP registration event, not the entity-level POC/org registration dates (2009-06-24, 2008-06-05), which are decoys.