AS441

AS441 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. In ARIN's registry the ASN is not an individually dated per-ASN object: it is covered by a single block-level autnum record (handle AS379, startAutnum 379 through endAutnum 508, holder AFCONC-BLOCK1-AS) that spans the whole contiguous Air Force Systems Networking range AS441 sits inside. That block record carries a top-level registration event of 1989-08-04 and a last-changed event of 2008-06-06 — first-party ARIN RDAP facts that apply to AS441 as a member of the block. The administrative, technical, and abuse contact is DISA-Columbus (Defense Information Systems Agency, Columbus/Whitehall, OH; abuse mailbox disa.columbus.ns.mbx.arin-registrations@mail.mil). The key triage point for AS441 is that it is effectively dormant today: RIPEstat, CAIDA AS Rank, and IANA-block data all agree it currently announces zero IPv4 and zero IPv6 prefixes, is seen by 0 of ~324 RIS peers, and has zero observed neighbours, zero customer cone beyond itself, and zero AS-degree relationships. It was briefly seen originating a single prefix, 139.242.36.0/24, from 2021-06-05 to 2024-09-26, but has not appeared in the global routing table since; bgp.he.net flags that lone prefix as a bogon. RPKI posture is not assessable because there are no active originations and therefore no ROAs to validate. No notable public abuse signal was found as of 2026-07-02 — not in CleanTalk (0 spam IPs, 0% spam rate), AbuseIPDB, Spamhaus, Talos, or NANOG-archive searches — consistent with a clean, inactive legacy DoD allocation with no live routing surface.

Operator

Air Force Systems Networking (U.S. DoD / U.S. Air Force; ARIN registrant org handle 7ESG, Maxwell AFB, AL); block record name AFCONC-BLOCK1-AS [Confirmed] — ARIN RDAP autnum/441, bgp.he.net/AS441

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), stat.ripe.net/data/as-overview?resource=441

Allocated

1989-08-04 (ARIN registry date read from the autnum block record's top-level registration event, NOT an IEEE date — IEEE publishes no ASN registration dates); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum/441 top-level events. ARIN exposes this as a block-level record (AS379–AS508), which is the only allocation event ARIN publishes for AS441; org-handle 7ESG (2008-06-05) and POC REGIS10-ARIN (2009-06-24) are entity-level dates and were correctly excluded.

Org status

ARIN registration record active/valid (block record status "active", last changed 2008-06-06); actual BGP routing dormant/unrouted since 2024-09-27 [Confirmed] — ARIN RDAP autnum/441, bgp.he.net/AS441

Contacts

abuse/admin/tech via DISA-Columbus, disa.columbus.ns.mbx.arin-registrations@mail.mil; registrant org address Maxwell AFB, AL 36114; POC address Whitehall, OH 43213 [Confirmed for abuse/RIR via RIPEstat; Likely for postal addresses via RDAP] — RIPEstat abuse-contact-finder, ARIN RDAP autnum/441

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — CleanTalk shows 0 detected IPs / 0.00% spam rate; no AS441-specific hits in AbuseIPDB, Spamhaus, Talos, or NANOG-archive searches; consistent with an inactive block with no live routing surface. Caveat: CleanTalk labels AS441 with the name "AFCONC-BLOCK1-AS", which ARIN attributes to the neighboring AS379 — a likely database mislabel across adjacent DoD ASNs, not a real identity conflict

Network & routing

Network type

U.S. Department of Defense (Air Force) legacy allocation; not a commercial ISP, hosting, or transit provider. AS441 is legacy/inactive [Confirmed] — ARIN RDAP autnum/441

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 — 0 RIS peers seeing it (0/324 v4, 0/320 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); observed_neighbours 0; no upstreams or peers visible in any source [Confirmed]. No PeeringDB org page exists for AS441; no operator peering-policy page located [Confirmed for absence; underlying arrangement Unknown] — peeringdb.com advanced search, bgp.he.net/AS441

RPKI

not assessable — AS441 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation requires a prefix and was skipped [Unknown] — stat.ripe.net rpki-validation

Notable usage

historically routed a single prefix 139.242.36.0/24 (first seen 2021-06-05, last seen 2024-09-26); bgp.he.net flags that prefix as a bogon; no IPv6. Unrouted legacy DoD allocation rather than an active production network [Confirmed] — bgp.he.net/AS441, RIPEstat routing-status

Related ASNs

sibling Air Force Systems Networking ASNs within/near the same DoD block family (e.g. AS379 AFCONC-BLOCK1-AS; other Air Force Systems Networking holdings such as AS136, AS399, AS400, AS486, AS491, AS730 per third-party DBs) [Confirmed for AS379 block context; Likely for the broader sibling list per third-party DB] — bgp.he.net/AS400, bgp.tools/as/400

Analyst note

Encountered as a dormant legacy ASN inside a DoD block record; ARIN RDAP for autnum 441 resolves to the enclosing AS379–AS508 block (expected ARIN behavior for these historic Air Force blocks), so the 1989-08-04 allocation date is the block's first-party event and was recorded, not nulled. Clean, inactive ASN.