AS450

AS450 is a legacy autonomous system number registered under ARIN as part of the AFCONC-BLOCK1-AS block, a flat contiguous range spanning AS379–AS508 held by Air Force Systems Networking — a U.S. Department of Defense / U.S. Air Force allocation associated with the 754th Electronic Systems Group at Maxwell AFB–Gunter Annex, Alabama. The registrant entity (ARIN org handle 7ESG) lists a Maxwell AFB address, while the administrative, technical, and abuse contact resolves to the DISA-Columbus registrations mailbox in Whitehall, Ohio. The key triage point for AS450 is that it is operationally dormant: RIPEstat reports it as not announced (zero IPv4 and zero IPv6 prefixes in the current query window), CAIDA AS Rank places it at 79,459 with a singleton customer cone and an AS degree of zero (no upstreams, peers, providers, or customers), and it holds no IXP memberships. Historical routing shows it first seen announcing 132.25.0.0/16 on 2000-08-25 and last seen announcing 132.3.24.0/22 on 2023-06-22, after which it fell out of the global table; no RIS peer currently sees it (0/325 v4, 0/321 v6). RPKI posture is not assessable from the available data because no specific prefix was supplied for validation. No notable public abuse signal was found as of 2026-07-02 — not in Spamhaus, AbuseIPDB, Scamalytics/IPQualityScore, or NANOG archives — consistent with a dormant government-assigned block that carries no independently routed traffic. A widely reported 2023 Air Force "critical compromise" story concerned Motorola land-mobile radio systems, not this BGP/IP allocation, and is explicitly ruled out as unrelated.

Operator

Air Force Systems Networking (U.S. DoD / U.S. Air Force; ARIN registrant handle 7ESG; associated with 754th Electronic Systems Group) [Confirmed] — ARIN RDAP autnum/450 (registrant vCard "Air Force Systems Networking")

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), ARIN RDAP

Allocated

1989-08-04 (ARIN RDAP autnum TOP-LEVEL registration event for the AFCONC-BLOCK1-AS block AS379–508 containing AS450 — a first-party RIR fact, NOT an IEEE date); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum/450 top-level events[]

Org status

active per ARIN RDAP status field, but operationally dormant in global routing since mid-2023; part of a large contiguous DoD block (AS379–508) [Confirmed] — ARIN RDAP autnum/450

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil; abuse/admin/tech via DISA-Columbus, 300 North James Road, Whitehall, OH 43213; registrant org address Maxwell AFB–Gunter Annex, AL 36114 [Confirmed] — ARIN RDAP autnum/450, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not in Spamhaus, AbuseIPDB, Scamalytics/IPQualityScore, or NANOG archives; the 2023 Air Force "critical compromise" story concerns Motorola land-mobile radio, not this ASN, and is ruled out as unrelated

Network & routing

Network type

U.S. military/government network (Department of Defense, Air Force); legacy/dormant block, not a commercial ISP or hosting provider [Confirmed] — ARIN RDAP autnum/450, bgp.he.net/AS450

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes currently announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / CAIDA AS Rank (2026-07)

Routing/peering

NOT announced — RIPEstat as-overview announced=false; 0 RIS peers seeing it (0/325 v4, 0/321 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); observed_neighbours 0; no public peering policy exists for this DoD block [Confirmed] — RIPEstat routing-status, CAIDA asrank/450

Historical routing

first seen announcing 132.25.0.0/16 on 2000-08-25; last seen announcing 132.3.24.0/22 on 2023-06-22; not in the visible table since [Confirmed] — RIPEstat routing-status

RPKI

not assessable — RIPEstat rpki-validation was skipped (requires a prefix parameter not supplied); no ROA coverage can be stated from this data [Unknown] — RIPEstat data pull note

Notable usage

dormant DoD-internal allocation within the AFCONC-BLOCK1-AS series (AS379–508); no active public network operation; last real BGP activity ended mid-2023 [Confirmed] — RIPEstat routing-status, bgp.he.net/AS450

Related ASNs

AFCONC-BLOCK1-AS siblings in the same 379–508 block (e.g. AS385, AS400, AS409, AS416, AS486, AS491), all U.S. Air Force Systems Networking-registered [Likely] — third-party whois mirrors (ipip.net, bgpview.io)

Analyst note

Dormant legacy DoD ASN. The RDAP top-level autnum object is a BLOCK-level record (handle AS379, name AFCONC-BLOCK1-AS, startAutnum 379, endAutnum 508); its top-level registration event 1989-08-04 is the correct allocated_date per ARIN's flat-block convention. Two nested entity-level dates (7ESG registrant 2008-06-05; REGIS10-ARIN contact 2009-06-24) were correctly excluded as decoys, not the ASN's own allocation.