AS471

AS471 is a legacy 16-bit autonomous system number administered by ARIN as part of the block record AS379–AS508, named AFCONC-BLOCK1-AS and registered to the organization "Air Force Systems Networking" (org handle 7ESG), a unit of the U.S. Department of the Air Force based at Maxwell AFB, Alabama. Administrative, technical, and abuse handling for the block is delegated to DISA-Columbus, the Defense Information Systems Agency's Columbus, Ohio field office, reachable at disa.columbus.ns.mbx.arin-registrations@mail.mil. The block's registration record is administratively active at ARIN, but AS471 itself has not been observed in the global BGP routing table since 2015: RIPEstat's routing-status data shows it first seen announcing 199.9.70.0/24 on 2005-07-01 and last seen announcing 128.26.70.0/24 on 2015-04-21, with zero of the 326 (v4) and 321 (v6) RIPE RIS peers currently seeing any route from it. CAIDA AS Rank corroborates this dormancy, placing AS471 at rank 79,459 with seen:false, cliqueMember:false, and a customer cone limited to itself (0 prefixes, 0 addresses, 0 degree in every direction). No PeeringDB record, no dedicated operator website, and no public abuse or incident history were found for this ASN, consistent with an inactive legacy Department of Defense allocation rather than an operating commercial or enterprise network.

Operator / registrant

Air Force Systems Networking (org handle 7ESG), 501 East Moore Dr. Bldg 884 Rm 1100 Gunther Annex, Maxwell AFB, AL 36114 [Confirmed] — https://rdap.arin.net/registry/autnum/471

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/471

Allocated

1989-08-04 (ARIN RDAP autnum top-level "registration" event for the AS379–AS508 block; not an entity-level decoy date) [Confirmed, two angles] — https://rdap.arin.net/registry/autnum/471, https://bgp.tools/as/471

Org status

registration record active at ARIN; operationally dormant/unrouted since 2015 [Confirmed] — https://rdap.arin.net/registry/autnum/471

Website

Unknown — no dedicated public site for this ASN or the AFCONC-BLOCK1-AS block; parent orgs' general sites are disa.mil and af.mil, neither of which references AS471 specifically [Likely] — https://www.disa.mil/

Abuse contact / admin-tech

REGIS10-ARIN, DISA-Columbus, 300 North James Road, Whitehall, OH 43213; disa.columbus.ns.mbx.arin-registrations@mail.mil; +1-844-347-2457 ext2

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal, blocklist entry, or published incident/hijack found as of 2026-07-09, across Spamhaus DROP/ASN-DROP, general ASN-reputation aggregators, and web-searchable NANOG archives

Network & routing

Network type

legacy/historic U.S. military (DoD/Air Force) block, not a commercial ISP or enterprise network; no first-party disa.mil/af.mil page names this specific ASN [Likely] — https://www.disa.mil/, https://rdap.arin.net/registry/autnum/471

Routing status

currently unrouted — 0 IPv4 and 0 IPv6 prefixes announced; last announced 128.26.70.0/24 on 2015-04-21; first seen announcing 199.9.70.0/24 on 2005-07-01; 0/326 v4 and 0/321 v6 RIS peers see it today [Confirmed] — https://stat.ripe.net/AS471

CAIDA AS Rank

79,459; cliqueMember false; seen false; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses; AS degree 0 in every direction [Confirmed] — https://asrank.caida.org/asns/471

RPKI

not assessable — RIPEstat rpki-validation was skipped because no prefix is currently announced to validate [Confirmed] — https://stat.ripe.net/AS471

Peering

no PeeringDB network record found for this ASN; no published peering policy [Confirmed] — https://www.peeringdb.com/api/net?asn=471

Notable usage

no first-party (DISA/Air Force) documentation names specific use of AS471 itself; general DoD network connections are governed by DISA's DISN Connection Process Guide, which does not enumerate legacy ASNs by number

[Unknown] — https://dl.dod.cyber.mil/wp-content/uploads/connect/pdf/unclass-DISN_CPG.pdf

ASN / block

AS471, part of ARIN block record AS379–AS508 ("AFCONC-BLOCK1-AS") [Confirmed] — https://rdap.arin.net/registry/autnum/471

Last changed

2008-06-06 (ARIN RDAP autnum top-level "last changed" event) [Confirmed] — https://rdap.arin.net/registry/autnum/471

Analyst note

block-level ARIN record (AS379–AS508) shared by all ASNs in the range, including AS471; treat operator/registration fields as block-wide facts, and ASN-specific operator page/peering policy/notable-usage as genuinely unverified rather than omitted.