AS442

AS442 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. It does not have its own individual autnum object at ARIN; instead every RDAP query for AS442 resolves to a single block-style registration record spanning AS379–AS508, named AFCONC-BLOCK1-AS, that was assigned to the same DoD org. The registrant org handle is 7ESG (Air Force Systems Networking, Maxwell AFB, Gunther Annex, AL), and administrative/technical/abuse contact is routed through DISA Columbus in Whitehall, OH. The key triage point for AS442 is that it is effectively dormant: every routing source consulted (RIPEstat, CAIDA AS Rank) agrees it announces zero IPv4 and zero IPv6 prefixes, is not seen by any RIS peer (0/324 v4, 0/320 v6), has zero observed neighbours, zero upstreams, zero peers, and no IXP memberships. Its customer cone is a singleton (the ASN itself, 0 prefixes, 0 addresses), and its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, reflecting complete BGP inactivity. RPKI posture cannot be assessed because there are no announced prefixes and therefore no ROAs to validate. No notable public abuse signal was found as of July 2026 — not in Spamhaus, AbuseIPDB, CleanTalk, or NANOG archives — which is consistent with an unrouted, reserved legacy DoD allocation that has no live address space to generate traffic-based abuse.

Operator

Air Force Systems Networking (US Air Force / US DoD; ARIN block record AFCONC-BLOCK1-AS, org handle 7ESG; registrant address Maxwell AFB, Gunther Annex, AL) [Confirmed] — ARIN RDAP autnum, RIPEstat as-overview

Country / RIR

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

Allocated

1989-08-04 (ARIN RDAP autnum TOP-LEVEL registration event on the AFCONC-BLOCK1-AS block record covering AS442; a first-party RIR fact, NOT an IEEE date); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum top-level events[]

Org status

active (per ARIN RDAP status field on the covering autnum block record) [Confirmed] — ARIN RDAP autnum

Contacts

abuse/registrant disa.columbus.ns.mbx.arin-registrations@mail.mil (DISA Columbus, 300 North James Road, Whitehall, OH 43213); tel +1-844-347-2457 ext2 [Confirmed] — ARIN RDAP entity REGIS10-ARIN, RIPEstat abuse-contact-finder

Website

Unknown / none identified — no dedicated operator/about/network-status page for AS442 or AFCONC-BLOCK1-AS; contact routes through DISA Columbus, not a public operator site [Confirmed as absent] — disa.mil (no AS442 reference)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not in Spamhaus, AbuseIPDB, CleanTalk (empty table), or NANOG archives; consistent with an unrouted/reserved legacy DoD block [Likely — absence-of-evidence on an unrouted ASN] — spamhaus.org, abuseipdb.com, cleantalk.org/blacklists/as442, bgp.he.net/AS442

Network & routing

Network type

U.S. Department of Defense / U.S. Air Force military network block; legacy/reserved allocation, not a commercial ISP or content network [Confirmed] — ARIN RDAP autnum (registrant address Maxwell AFB)

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

Routing/peering

NOT announced — 0 RIS peers seeing it (0/324 v4, 0/320 v6); announced-prefixes empty for the full 2000-08-01→2026-07-02 window; CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers visible [Confirmed]. No peering policy published; no PeeringDB record (net?asn=442 → HTTP 404)

[Confirmed] — RIPEstat, CAIDA, peeringdb.com

RPKI

not assessable — AS442 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation skipped (no prefix supplied) [Unknown] — RIPEstat rpki-validation

Notable usage

no independent public documentation of AS442's specific operational use beyond being part of the historic AFCONC (Air Force Communications) block AS379–AS508 held by Air Force Systems Networking for DoD routing/connectivity [Unknown] — no operator-official source located

Related ASNs

AS379–AS508 all fall within the same AFCONC-BLOCK1-AS block registration [Confirmed] — ARIN RDAP autnum (startAutnum 379, endAutnum 508)

Analyst note

Encountered as a dormant legacy DoD/USAF ASN. RDAP has no per-ASN object for 442 — it resolves to the block record AS379–508 (handle reads "AS379"); block-level registration/last-changed dates are used per the RIR-first-party-fact rule. The nested REGIS10-ARIN entity (registration 2009-06-24) and 7ESG org (registration 2008-06-05) are decoys and were NOT used for allocated_date. Clean, unannounced ASN.