AS522

AS522 is a legacy autonomous system number allocated by ARIN in 1989 to "Air Force Systems Networking," registered under organizational handle 7ESG with a registrant address at Maxwell AFB, Alabama. Administrative, technical, and abuse contact for the resource runs through DISA-Columbus (Defense Information Systems Agency, Whitehall, Ohio field office, handle REGIS10-ARIN), the entity that manages ASN and IP registrations on behalf of U.S. Air Force networks. Community research ties the operating unit to the 754th Electronic Systems Group at Maxwell AFB–Gunter Annex, part of the former Air Force Systems Command/Space Systems Division lineage reflected in the RDAP name AFSC-SSD-AS. This is a Department of the Air Force / DoD network resource rather than a commercial operator, and it has no public corporate presence: no PeeringDB network record, no dedicated operator website, and no NANOG, Reddit, or outage-tracker mentions were found. Every routing source consulted — RIPEstat routing-status and announced-prefixes, CAIDA AS Rank, and bgp.he.net — independently agrees AS522 currently announces zero IPv4 and zero IPv6 prefixes, has zero observed BGP peers, and zero visible neighbours, consistent with a dormant, registry-only ASN operating (if at all) inside non-public DoD network infrastructure rather than the open Internet default-free zone. RDAP status is "active," but there is no routing footprint to evaluate for RPKI or abuse. No notable public abuse or threat-intelligence signal was found as of 2026-07-10, though Spamhaus's live checker could not be directly queried (HTTP 403 to automated fetch), so that absence is not exhaustive.

Operator

Air Force Systems Networking (7ESG); U.S. Department of the Air Force / DoD, administratively managed via DISA-Columbus [Confirmed] — https://rdap.arin.net/registry/autnum/522, https://rdap.arin.net/registry/entity/7ESG

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/522

Allocated

1989-09-25 (ARIN RDAP autnum top-level registration event — first-party RIR fact); last changed 2008-08-18 [Confirmed] — https://rdap.arin.net/registry/autnum/522

Org status

active per ARIN RDAP status field [Confirmed] — https://rdap.arin.net/registry/autnum/522

Contacts

abuse/admin/technical via disa.columbus.ns.mbx.arin-registrations@mail.mil (REGIS10-ARIN, 300 North James Road, Whitehall, OH 43213; +1-844-347-2457 ext2) [Confirmed] — https://rdap.arin.net/registry/entity/REGIS10-ARIN

Security/abuse context (NEUTRAL, DATED)

no notable public abuse or threat-intelligence signal found as of 2026-07-10 across Spamhaus ASN-DROP documentation, bgp.he.net, and NANOG archives; Spamhaus's live reputation checker returned HTTP 403 to automated fetch and could not be directly queried, so this is an absence of evidence, not a confirmed clean record from every source

Network & routing

Network type

DoD/USAF internal network resource, not a commercial ISP or enterprise network; registrant org address Maxwell AFB, AL [Likely] — https://rdap.arin.net/registry/autnum/522, https://rdap.arin.net/registry/entity/7ESG

Size

dormant — 0 IPv4 prefixes/addresses and 0 IPv6 prefixes announced; CAIDA customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=522, https://api.asrank.caida.org/v2/restful/asns/522, https://bgp.he.net/AS522

Routing/peering

NOT announced — 0 of 327 RIS peers see v4, 0 of 321 see v6, 0 observed neighbours; CAIDA AS degree total 0 (customer/peer/provider all 0); no PeeringDB network record (404) [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=522, https://api.asrank.caida.org/v2/restful/asns/522, https://www.peeringdb.com/api/net?asn=522

RPKI

not assessable — no prefixes are announced under AS522, so there is nothing to validate against [Confirmed] — https://stat.ripe.net/data/rpki-validation/data.json?resource=522

Notable usage

community/registry corroboration ties AS522 to the 754th Electronic Systems Group (Air Force Systems Command / Space Systems Division lineage), Maxwell AFB–Gunter Annex; no public press or fact-sheet explicitly names AS522 [Likely] — https://bgp.potaroo.net/cidr/autnums.html, https://www.hanscom.af.mil/News/Article-Display/Article/381978/754-elsg-division-shapes-supports-it-purchases-across-dod/

Related ASNs

"Air Force Systems Networking" is an umbrella org name also used for AS399, AS486, AS4021, and AS4486 in third-party lookup services; this entry is scoped strictly to AS522 [Likely] — https://ipinfo.io/AS4021, https://ipinfo.io/AS486, https://db-ip.com/as4486-air-force-systems-networking

Analyst note

dormant/unrouted legacy DoD ASN; registry-only presence with no active BGP footprint in any of four independent routing sources (RIPEstat, CAIDA, bgp.he.net corroborated live), consistent with military network isolation from the public default-free zone.