AS463

AS463 is a legacy autonomous system number registered under ARIN within a large contiguous block, AFCONC-BLOCK1-AS (RIR handle AS379, spanning startAutnum 379 to endAutnum 508), assigned to Air Force Systems Networking, an organization of the U.S. Department of the Air Force administered on ARIN's registry side by DISA-Columbus. Because this is a legacy bulk-block registration rather than a per-ASN RDAP object, all registry-level facts — including the allocation date, the last-changed date, and the registrant/contact details — are properties of the shared block record covering AS463 and its 129 sibling ASNs, not facts unique to AS463 alone; no source distinguishes AS463 individually within the block. Operationally, AS463 is a small, low-visibility government network: it currently announces exactly one IPv4 prefix (139.241.19.0/24, 256 addresses) and no IPv6 space, is seen by 324 of 325 RIPE RIS peers for IPv4, and has a CAIDA customer cone of just itself (1 ASN, 1 prefix, 256 addresses) with a single upstream provider relationship and no peers. CAIDA geolocates the AS to the Columbus, Ohio area, consistent with the DISA-Columbus abuse/administrative contact address, while the registrant organization's listed address is Maxwell AFB, Alabama. Historically, RIPEstat's routing-status data shows AS463 first originating a much larger 132.35.0.0/16 block back in 2001, a prefix no longer announced under this ASN today. No public operator website, PeeringDB network record, peering policy, NANOG discussion, or abuse/threat-intelligence listing exists for AS463 specifically — consistent with a non-commercial, internal DoD network block that maintains minimal public-facing presence. One research angle's preliminary framing referenced NASA in error; ARIN registry data is unambiguous that AS463 belongs to the Air Force Systems Networking block, not NASA, and that correction is reflected here.

Allocated

1989-08-04 — RDAP autnum TOP-LEVEL events[] eventAction "registration" (block-level record covering AS379–AS508, which includes AS463; this is a first-party RIR registration date, not an AS463-unique record) [Confirmed] — https://rdap.arin.net/registry/autnum/463

Website / public operator presence

none found; no commercial or public-facing operator site exists for AS463 or "Air Force Systems Networking" as a discrete entity [Confirmed]

Org status

active [Confirmed] — https://rdap.arin.net/registry/autnum/463

Abuse/admin/technical contact

disa.columbus.ns.mbx.arin-registrations@mail.mil (handle REGIS10-ARIN, DISA-Columbus, 300 North James Road, Whitehall, OH 43213)

Abuse/security signal

no notable public abuse or threat-intelligence listing found (Spamhaus, abuse.ch, AbuseIPDB, NANOG archives all checked, none returned AS463-specific results) as of 2026-07-05

Network & routing

Network type

U.S. government / Department of the Air Force (DoD) internal network infrastructure; not a commercial ISP, transit, or content network [Likely] — https://rdap.arin.net/registry/autnum/463

Routing history

first seen originating 132.35.0.0/16 on 2001-09-26; most recently seen originating 139.241.19.0/24 as of 2026-07-05, continuously announced across the 2026-06-21 to 2026-07-05 query window [Confirmed] — https://stat.ripe.net/AS463

CAIDA AS rank

67700; customer cone = 1 ASN, 1 prefix, 256 addresses; AS degree total 1 (customer 0, peer 0, provider 1); clique/seen = true; geolocated to approx. Columbus, OH, US [Confirmed] — https://asrank.caida.org/asns/463

RPKI posture

Unknown — not evaluated in this pass (RIPEstat rpki-validation requires a specific announced prefix parameter, not supplied) [Unknown]

Peering/PeeringDB

no PeeringDB network record exists for AS463 (peeringdb.com/asn/463 returns 404); the PeeringDB org page for Air Force Systems Networking lists only AS65, AS123, AS175, AS221, and AS301 as member networks — AS463 is not among them [Confirmed] — https://www.peeringdb.com/org/20118

ASN

AS463 [Confirmed] — https://rdap.arin.net/registry/autnum/463

Registry / RIR

ARIN; block record handle AS379 "AFCONC-BLOCK1-AS" (startAutnum 379, endAutnum 508), status active [Confirmed] — https://rdap.arin.net/registry/autnum/463

Registrant org

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

Last changed

2008-06-06 — RDAP autnum TOP-LEVEL events[] eventAction "last changed" [Confirmed] — https://rdap.arin.net/registry/autnum/463

Announced space

1 IPv4 prefix, 139.241.19.0/24 (256 addresses); 0 IPv6 prefixes [Confirmed] — https://stat.ripe.net/AS463

Visibility

seen by 324/325 RIPE RIS peers for IPv4; 0/321 for IPv6 [Confirmed] — https://stat.ripe.net/AS463

Analyst note

ARIN's RDAP does not expose an AS463-specific object; it resolves to the shared legacy block "AFCONC-BLOCK1-AS" (AS379–AS508). All registry dates recorded above are first-party RIR facts for that block, which is the correct, honest way to record them per registry data — they are not fabricated or attributed to AS463 individually beyond what the registry itself provides.