AS445

AS445 is a legacy autonomous system number registered under ARIN to Air Force Systems Networking, a U.S. Department of Defense / U.S. Air Force organization historically associated with the 754th Electronic Systems Group at Maxwell AFB–Gunter Annex, Alabama. The number sits inside a large contiguous ARIN allocation block (the autnum record spans startAutnum 379 to endAutnum 508, handle AS379, named AFCONC-BLOCK1-AS), with day-to-day registration handled by DISA (Defense Information Systems Agency) in Columbus, Ohio. The key triage point for AS445 is that it is effectively dormant today: every routing source consulted (RIPEstat, CAIDA AS Rank) agrees it announces zero IPv4 and zero IPv6 prefixes, is not currently announced, has zero visible BGP peers, zero upstreams, and zero customers. RIPEstat records exactly one brief historical origination — prefix 132.9.0.0/16, first seen 2001-09-26 and last seen 2001-10-23, a roughly four-week window over two decades ago — and nothing since. CAIDA reports the AS as unseen in current topology (seen=false), a bottom-of-table rank of 79,459, and a singleton customer cone (1 ASN, 0 prefixes, 0 addresses). RPKI posture cannot be assessed because there are no active originations and therefore no ROAs to validate. No notable public abuse signal was found as of July 2026 — not in Spamhaus, AbuseIPDB, NANOG archives, or general threat-intel platforms — consistent with a clean, dormant government ASN.

Operator

Air Force Systems Networking (U.S. DoD / U.S. Air Force; ARIN registrant handle 7ESG, historically tied to the 754th Electronic Systems Group, Maxwell AFB–Gunter Annex, AL) [Confirmed] — ARIN RDAP autnum/445, bgp.he.net/AS445

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), CAIDA (country.iso: US)

Allocated

1989-08-04 (ARIN registry date from the autnum TOP-LEVEL events[] registration event, NOT the nested entity/POC events — those 2008/2009/2025/2026 dates are org/contact record timestamps and were excluded as decoys); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum/445 top-level events

Org status

active in ARIN registry (status: active) but operationally dormant; block AFCONC-BLOCK1-AS registered to Air Force Systems Networking, registration handling via DISA-Columbus [Confirmed] — ARIN RDAP autnum/445, bgp.he.net/AS445

Contacts

abuse/admin/tech POC disa.columbus.ns.mbx.arin-registrations@mail.mil (DISA-Columbus, 300 North James Road, Whitehall, OH 43213; +1-844-347-2457 ext2); registrant address 501 East Moore Dr, Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP autnum/445, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not in Spamhaus, AbuseIPDB, NANOG archives, or general threat-intel platforms; dormant government ASN

Network & routing

Network type

U.S. government / military (Department of the Air Force) network infrastructure block; AS445 is legacy/inactive [Confirmed] — bgp.he.net/AS445, ip2location.com/as445

Size

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

Routing/peering

NOT announced — as-overview announced=false, announced-prefixes empty; 0 RIS peers seeing it (0/325 v4, 0/321 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers visible [Confirmed] — RIPEstat, CAIDA asrank/445. No PeeringDB entry for AS445 specifically (the org's PeeringDB record lists other AFSN ASNs but not 445)

[Confirmed] — peeringdb.com/org/20118

RPKI

not assessable — AS445 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation requires a prefix and was skipped [Confirmed] — RIPEstat

Notable usage

single brief historical announcement of 132.9.0.0/16, first seen 2001-09-26 / last seen 2001-10-23; no announcements since. Legacy DoD/Air Force block member, currently unrouted [Confirmed] — RIPEstat routing-status

Related ASNs

block members registered to Air Force Systems Networking span roughly AS379–AS508; org also holds other AFSN ASNs (e.g. AS65, AS123, AS175, AS221, AS301 per PeeringDB) [Confirmed for block range via RDAP; Likely for the specific list per PeeringDB] — ARIN RDAP autnum/445, peeringdb.com/org/20118

Analyst note

Encountered as a dormant legacy DoD/Air Force ASN within the AFCONC-BLOCK1-AS allocation. WHOIS/RDAP resolves to Air Force Systems Networking; live routing is absent. Clean, inactive ASN.