AS479

AS479 is a legacy ARIN-registered autonomous system number belonging to a block registration named AFCONC-BLOCK1-AS, covering the contiguous range AS379–AS508 and registered to "Air Force Systems Networking" — a U.S. Air Force / Department of Defense network, with registrant org handle 7ESG at Maxwell AFB, Alabama, and day-to-day RIR administration handled by DISA-Columbus (Defense Information Systems Agency), Whitehall, Ohio. ARIN's convention of naming a block record after its lowest member (AS379) is why the top-level RDAP object returns handle "AS379" for a lookup of AS479; this is normal block-registration behavior, not a fetch error, and its top-level events[] are the correct authoritative record for every member ASN in the range, including AS479. The registry's top-level registration event dates to 1989-08-04, with a last-changed event of 2008-06-06. AS479 is not a commercial or content network with a public-facing presence; it has no dedicated operator website, no PeeringDB net record, and no public peering policy. It was actively routed in the global table between 2001 and 2013 but has announced zero IPv4 and zero IPv6 prefixes and shown zero BGP peers since, making it effectively dormant. No notable public abuse or community-reputation signal was found, consistent with an inactive, DoD-held registry resource rather than an operating network.

Operator / registrant

Air Force Systems Networking (U.S. Air Force / DoD), org handle 7ESG, 501 East Moore Drive, Bldg 884 Rm 1100, Gunther Annex, Maxwell AFB, AL 36114; registry object name AFCONC-BLOCK1-AS covering block AS379–AS508

[Confirmed] — ARIN RDAP autnum + entity 7ESG; corroborated by RIPEstat as-overview and bgp.he.net/AS479

Country / RIR

US, ARIN [Confirmed] — RIPEstat as-overview (block "Assigned by ARIN"), ARIN RDAP

Allocated

1989-08-04 — read from the autnum object's TOP-LEVEL events[] (registration eventDate 1989-08-04T00:00:00-04:00); last changed 2008-06-06 (top-level "last changed" event). Nested entity events (REGIS10-ARIN registration 2009-06-24; registrant 7ESG registration 2008-06-05) are contact/org records, correctly excluded as decoys

[Confirmed, two independent RDAP fetches] — https://rdap.arin.net/registry/autnum/479, https://stat.ripe.net/data/whois/data.json?resource=AS479

Org status

registry status "active" at the ARIN autnum-object level; BGP-visibility label from ipinfo.io separately calls AS479 "Inactive" (a routing classification, not a registry-status field) — both recorded rather than collapsed into one figure

[Likely] — https://rdap.arin.net/registry/autnum/479, https://ipinfo.io/AS479

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil; +1-844-347-2457 ext2; registrant address 501 East Moore Drive Bldg 884 Rm 1100, Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP entity REGIS10-ARIN, RIPEstat abuse-contact-finder

IANA reference

none found; legacy ARIN-administered 16-bit ASN block, left blank rather than invented [Unknown]

Security/abuse context (NEUTRAL, DATED)

no notable public abuse or threat-intel signal found as of 2026-07-09 across Spamhaus, abuse.ch (URLhaus/MalwareBazaar/ThreatFox), AbuseIPDB/GreyNoise/Talos-category searches; consistent with a dormant, unrouted government ASN [Likely] — https://www.spamhaus.org/resource-hub/threat-intelligence/how-to-report-suspicious-activity-to-spamhaus/, https://www.talosintelligence.com/reputation

Network & routing

Network type

Government/Military — U.S. DoD (Air Force) internal network, not a commercial ISP, content, or hosting network; legacy/currently inactive in global BGP [Confirmed] — RIPEstat as-overview, ipinfo.io/AS479

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses, 0 IPv6 prefixes / 0 IPv6 48s currently announced; CAIDA customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status, CAIDA ASRank (api.asrank.caida.org/v2/restful/asns/479)

Routing/peering

NOT currently announced — 0 of 326 RIS peers see IPv4, 0 of 321 see IPv6; CAIDA AS-degree total 0 (customer 0, peer 0, provider 0); 0 BGP peers/prefixes on bgp.he.net; no PeeringDB net record for AS479 (peeringdb.com/api/net?asn=479 → 404)

[Confirmed] — https://stat.ripe.net/AS479/, https://bgp.he.net/AS479, https://www.peeringdb.com/api/net?asn=479

Historical routing

was announced 2001–2013 — first_seen 199.251.44.0/24 on 2001-09-26; last_seen 131.16.249.0/24 on 2013-04-09; no announcements observed since [Confirmed] — RIPEstat routing-status (stat.ripe.net/AS479/)

CAIDA AS rank

79459; not a clique member; not seen in current AS-topology [Confirmed] — https://api.asrank.caida.org/v2/restful/asns/479

RPKI

not assessable — AS479 currently announces no prefixes, so RIPEstat's rpki-validation endpoint (which requires a prefix parameter) could not be run [Unknown/not applicable] — https://stat.ripe.net/AS479/

Notable usage

none identified publicly; sits within the large DoD/Air Force-managed ARIN block AS379–AS508. A secondary aggregator summary suggested upstream routing via AS27066 ("United States Department of Defense") but this was not independently confirmed against a primary BGP source

[Unknown] — https://bgp.he.net/AS479

ASN

AS479 [Confirmed] — https://rdap.arin.net/registry/autnum/479

Community presence

minimal — no NANOG archive mentions, no public outage reports found specific to AS479; a PeeringDB organization profile exists for Air Force Systems Networking (org/20118) though no net-level record ties to AS479 itself

[Likely] — https://www.peeringdb.com/org/20118, https://archive.nanog.org/archives.html

Analyst note

AS479 has no ASN-specific RDAP object — ARIN registers it inside a covering block record (AS379–AS508, "AFCONC-BLOCK1-AS") keyed to the block's lowest member, which is normal behavior, not a data error. The block's top-level registration date (1989-08-04) is the correct allocated_date for AS479. All routing sources agree the ASN has been dormant since 2013.