AS474

AS474 sits inside a legacy ARIN block registration spanning AS379–AS508, named AFCONC-BLOCK1-AS and registered to Air Force Systems Networking (AFSN), a U.S. Air Force / Department of Defense entity whose registrant address is listed at Gunther Annex, Maxwell AFB, Alabama. The block's ARIN RDAP autnum object carries a top-level registration event dated 1989-08-04, with a last-changed event of 2008-06-06; administrative, technical, and abuse contact duties are delegated to a DISA-Columbus registration team (handle REGIS10-ARIN) reachable at disa.columbus.ns.mbx.arin-registrations@mail.mil. AS474 is currently dormant on the public Internet: RIPEstat shows it announcing zero IPv4 and zero IPv6 prefixes, with zero visible peers across all 326 IPv4 and 321 IPv6 RIS route-collector vantage points, and CAIDA's AS Rank (79,459) reflects an isolated customer cone consisting only of the ASN itself, with zero prefixes and zero addresses. Historically, AS474 was seen originating 132.22.0.0/16 as early as 2001-09-26 and last originated 131.16.244.0/24 on 2015-05-16 — a prefix now flagged by third-party routing trackers as an unannounced bogon block. No public abuse, hijack, or blocklist signal was found for AS474 as of 2026-07-10 across Spamhaus, CleanTalk, and NANOG-archive-oriented searches; this is reported as a sourced, dated null rather than a claim of a clean history, consistent with a withdrawn military ASN's naturally limited public footprint. Broader DoD/Air Force cybersecurity incidents surfaced during research (the 2023 Discord/Pentagon leak, Viasat terminal attacks) are organization-wide stories not attributable to AS474 specifically and are excluded here to avoid false attribution.

Operator

Air Force Systems Networking (AFSN) — U.S. Air Force / Department of Defense; ARIN registrant entity "7ESG" [Confirmed] — https://rdap.arin.net/registry/autnum/474

Country / RIR

US, ARIN [Confirmed] — https://stat.ripe.net/AS474 (abuse-contact-finder authoritative_rir: arin)

Allocated

1989-08-04 (ARIN RDAP top-level registration event for the block AS379–AS508 that contains AS474); last changed 2008-06-06 [Confirmed] — https://rdap.arin.net/registry/autnum/474

Org status

ARIN RDAP status = active (registration record; does not reflect routing activity) [Confirmed] — https://rdap.arin.net/registry/autnum/474

Contacts

DISA-Columbus registration team, disa.columbus.ns.mbx.arin-registrations@mail.mil, +1-844-347-2457 ext2; registrant (AFSN) address 501 East Moore Dr., Bldg. 884, Rm. 1100, Gunther Annex, Maxwell AFB, AL 36114 [Confirmed] — https://rdap.arin.net/registry/autnum/474

Security/abuse context (NEUTRAL, DATED)

no notable public abuse, hijack, or blocklist signal found as of 2026-07-10 — not in Spamhaus DROP/SBL, CleanTalk, or NANOG-archive searches; unrelated broader DoD/Air Force incidents (2023 Discord leak, Viasat attack) excluded as not AS474-specific

Network & routing

Network type

U.S. military/government network (DoD/USAF), not a commercial ISP; block name AFCONC-BLOCK1-AS [Confirmed] — https://rdap.arin.net/registry/autnum/474

Size

dormant — 0 IPv4 and 0 IPv6 prefixes currently announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/AS474, https://asrank.caida.org/asns/474

Routing/peering

not announced — 0 of 326 RIS peers see it on IPv4, 0 of 321 on IPv6; CAIDA degree total 0 (customer 0, peer 0, provider 0); no public peering policy text found (PeeringDB org 20118, "Air Force Systems Networking," exists but does not list AS474 or a policy)

[Confirmed] — https://asrank.caida.org/asns/474, https://www.peeringdb.com/org/20118

RPKI

not assessable — AS474 announces no prefixes, so there are no ROAs to validate against [Unknown] — https://stat.ripe.net/AS474

Historical routing

first seen originating 132.22.0.0/16 on 2001-09-26; last seen originating 131.16.244.0/24 on 2015-05-16, a prefix now flagged as a bogon by third-party trackers; one historical peer, AS27139 (also U.S. DoD), reported by a single source [Likely] — https://bgp.he.net/AS474

Related ASNs

part of the flat block registration AS379–AS508 (AFCONC-BLOCK1-AS) [Confirmed] — https://rdap.arin.net/registry/autnum/474

Analyst note

Encountered as a dormant legacy military ASN nested inside a large ARIN block registration; no current routing footprint has been observed since 2015-05-16.