AS502

AS502 is a legacy U.S. government autonomous system number registered under ARIN as part of a flat block registration spanning AS379 through AS508, all sharing the name AFCONC-BLOCK1-AS. The registrant organization is Air Force Systems Networking (ARIN org handle 7ESG), tied to the 754th Electronic Systems Group at Maxwell AFB–Gunter Annex, Alabama, with administrative, technical, and abuse contact handled centrally by DISA-Columbus (Defense Information Systems Agency). The block's top-level RDAP registration event dates to 1989-08-04, with a last-changed event of 2008-06-06 — figures corroborated across the raw canonical fetch, the routing angle, and the community angle, and distinct from two decoy entity-level contact-record dates (2008-06-05 and 2009-06-24) that must not be mistaken for the allocation date. Routing-wise, AS502 is effectively dormant: RIPEstat and CAIDA agree on zero currently-announced IPv4/IPv6 prefixes, zero BGP relationships (customer/peer/provider all 0), and a customer cone limited to the ASN itself. One brief historical announcement of 103.88.25.0/24 was observed for roughly two days in early March 2026, then withdrawn. No public abuse signal, hijack history, or NANOG discussion was found as of this cycle.

Operator / registrant

Air Force Systems Networking (ARIN org handle 7ESG); block admin/tech/abuse contact is DISA-Columbus, disa.columbus.ns.mbx.arin-registrations@mail.mil [Confirmed] — https://rdap.arin.net/registry/autnum/502

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/502

Allocated

1989-08-04 (RDAP autnum TOP-LEVEL registration event for the shared AS379–AS508 block that covers AS502); last changed 2008-06-06 [Confirmed] — https://rdap.arin.net/registry/autnum/502 (corroborated by web-search summary of ARIN data)

Org status

ARIN RDAP status "active" for the containing AS379–AS508 block; AS502 has no standalone RDAP record and is served as part of the shared block rather than individually re-delegated [Confirmed] — https://rdap.arin.net/registry/autnum/502

Website

no dedicated operator website, IR page, or standalone official network page located for Air Force Systems Networking or AS502 [Unknown] — https://ipinfo.io/AS502

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-10 — absent from Spamhaus ASN-DROP, no NANOG/seclists.org mailing-list discussion, no BGP-hijack or route-leak reporting located

Network & routing

Network type

U.S. Department of Defense / U.S. Air Force military network resource (non-commercial); part of the consecutive government block AS379–AS508, all registered to org 7ESG [Confirmed] — https://rdap.arin.net/registry/autnum/502

Size / routing status

currently unannounced — 0 IPv4 prefixes, 0 IPv6 prefixes, 0/327 v4 and 0/321 v6 RIS peer visibility; one brief historical announcement of 103.88.25.0/24 (first seen 2026-03-02, last seen 2026-03-04) [Confirmed] — https://stat.ripe.net/AS502

Routing/peering

no observed upstreams, peers, or customers (CAIDA asnDegree total 0); a PeeringDB org named "Air Force Systems Networking" (org id 20118) exists but its listed ASNs do not include AS502, so no peering policy can be confidently attributed

[Unknown] — https://www.peeringdb.com/org/20118, https://asrank.caida.org/asns/502

RPKI

not assessed this cycle — RIPEstat rpki-validation requires a specific prefix and was skipped [Unknown] — https://stat.ripe.net/AS502

AS rank / customer cone

CAIDA ASRank #79459; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses; not an IXP; not seen in current topology [Confirmed] — https://asrank.caida.org/asns/502

Notable usage

none identified; AS502 is routing-dormant with no press, contract, or program specifically tied to it [Likely] — https://ipinfo.io/AS502

Related ASNs

part of the AS379–AS508 flat block (AFCONC-BLOCK1-AS); sibling ASNs in the same block previously researched include AS499 (DONE) and AS501 [Confirmed] — https://rdap.arin.net/registry/autnum/502

ASN

AS502 [Confirmed] — https://rdap.arin.net/registry/autnum/502

Analyst note

dormant DoD/Air Force ASN inside a large shared ARIN block; allocation date correctly read from the autnum's top-level events, not the nested entity records.