AS437

AS437 is a legacy autonomous system number registered under ARIN as part of the block object AFCONC-BLOCK1-AS, which spans AS379–AS508 and is held by "Air Force Systems Networking" (registrant org handle 7ESG, Maxwell AFB–Gunter Annex, Alabama). Administrative, technical, and abuse contact for the block resolves to the DISA registration desk in Columbus, Ohio (disa.columbus.ns.mbx.arin-registrations@mail.mil), placing AS437 within U.S. Department of Defense / Department of the Air Force network infrastructure rather than any commercial or membership ISP. The triage point for AS437 is that it is dormant today: RIPEstat reports the ASN as not announced, with zero IPv4 and zero IPv6 prefixes in the current global table and zero visible RIS peers (0/324 v4, 0/320 v6). There is exactly one historical announcement on record — 132.10.0.0/16, seen briefly in RIS between 2001-09-26 and 2001-10-23 — with nothing since. CAIDA corroborates the near-zero live footprint: AS rank 79,459, a singleton customer cone (1 ASN, 0 prefixes, 0 addresses), and an AS degree of zero across customer, peer, and provider. The ARIN registry status remains active (allocated but not announcing), distinct from the inactive BGP-announcement status. No notable public abuse signal was found as of 2026-07-02 — not on the Spamhaus ASN-DROP list, in general threat-intel OSINT, or in NANOG mailing-list archives — consistent with a clean, dormant military-registered ASN with no live traffic surface. One record note: the ARIN RDAP autnum object for resource 437 resolves to the flat-registry block record (handle/name AS379, AFCONC-BLOCK1-AS, startAutnum 379 / endAutnum 508) — expected ARIN legacy behavior in which one record covers AS379–AS508 — while the RIPEstat/CAIDA facts key off resource 437; the registration date below (1989-08-04) is the block's top-level autnum events[] registration event, read per the first-party-RIR rule and confirmed for AS437.

Operator

U.S. Department of the Air Force; ARIN registrant name on record "Air Force Systems Networking" (block AFCONC-BLOCK1-AS, org handle 7ESG, Maxwell AFB, AL) [Confirmed] — ARIN RDAP autnum/437, ripestat as-overview (holder "AFCONC-BLOCK1-AS - Air Force Systems Networking")

Country / RIR

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

Allocated

1989-08-04 (ARIN registry date on the AFCONC-BLOCK1-AS autnum top-level registration event; NOT an IEEE date — IEEE publishes no ASN registration dates); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum top-level events

Org status

ARIN registry status active (allocated, not announcing); distinct from BGP-announcement status which is inactive [Confirmed] — ARIN RDAP autnum/437

Contacts

abuse/admin/technical disa.columbus.ns.mbx.arin-registrations@mail.mil (DISA-Columbus, 300 North James Road, Whitehall, OH 43213; +1-844-347-2457 ext2); registrant address Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP autnum/437, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not on Spamhaus ASN-DROP, in general threat-intel/OSINT, or NANOG archives; dormant military ASN with no live traffic surface

Network & routing

Network type

U.S. federal government / military (DoD, Department of the Air Force); AS437 is legacy/dormant, not a commercial or membership ISP [Likely] — ARIN RDAP autnum/437, ripestat as-overview

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes currently; one historical /16 (132.10.0.0/16, RIS Sep–Oct 2001); customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / announced-prefixes, CAIDA AS Rank

Routing/peering

NOT announced — announced:false; 0 RIS peers seeing it (0/324 v4, 0/320 v6); observed_neighbours 0; CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers visible in any source [Confirmed] — RIPEstat routing-status, CAIDA asrank

Peering policy

Unknown — no PeeringDB network object exists for AS437 (404); no public peering-policy document located [Unknown] — peeringdb.com/asn/437

RPKI

not assessable — AS437 announces no prefixes, so there are no live routes/ROAs to validate; RIPEstat rpki-validation skipped (no prefix supplied) [Unknown] — RIPEstat

Notable usage

third-party BGP/WHOIS observation only — currently inactive, zero prefixes, zero peers; no operator-published statement. Associated parent department af.mil, but no page referencing AS437 located [Unknown] — ripestat as-overview, ipinfo.io/AS437, bgp.he.net/AS437

Related org

754th Electronic Systems Group (Maxwell AFB–Gunter Annex, AL) associated with USAF secure combat information systems [Likely] — community sources (togetherweserved, military-history wiki)

Analyst note

Registration date read from the ARIN RDAP autnum object for resource 437, which resolves to the AFCONC-BLOCK1-AS block record (handle/name AS379, block AS379–AS508) — expected ARIN legacy block-record behavior in which one record covers AS379–AS508; allocated_date 1989-08-04 is confirmed as the block's top-level registration event. Routing/CAIDA/RIPEstat facts are keyed correctly to 437 and internally consistent.