AS301

AS301 is a legacy autonomous system number registered under ARIN to Air Force Systems Networking (AFSN), a U.S. Air Force / Department of Defense network organization administered by DISA Columbus and headquartered at Maxwell-Gunter Annex AFB in Montgomery, Alabama. Its ARIN ASN name is C3PO-AS — a Command, Control, Communications/Computer Systems designation — and it carries a 1989 ARIN registration date, placing it among the earliest-registered ASNs and reflecting the early DoD presence on the Internet. The key triage point for AS301 is that it is dark today: every routing source consulted (RIPEstat, CAIDA AS Rank, bgp.he.net) agrees it announces zero IPv4 and zero IPv6 prefixes, is seen by 0 of 323 IPv4 RIS peers, has zero observed BGP neighbours, and has a customer cone of one (the ASN itself, 0 prefixes, 0 addresses). It was operationally active for roughly a decade — RIPEstat first observed it in routing on 2012-04-13 (prefix 193.105.29.0/24) and last on 2022-11-17 (prefix 185.51.78.0/23) — but has been withdrawn from the global routing table since November 2022. CAIDA ranks it 79,459 with degree total 0 (no customers, peers, or providers) and marks it not seen in the topology. RPKI posture is not assessable because there are no active originations and therefore no ROAs. No notable public abuse signal was found as of 2026-06-28 — not in Spamhaus ASN-DROP, CleanTalk, or NANOG archives — consistent with a dormant, internally-routed DoD network that does not appear on commercial abuse feeds in the normal course.

Operator

Air Force Systems Networking (AFSN; ARIN org handle 7ESG), administered by DISA Columbus (REGIS10-ARIN), Maxwell-Gunter Annex AFB, Montgomery, AL 36114 [Confirmed] — ARIN RDAP autnum/301, whois.arin.net/rest/asn/AS301.json

Country / RIR

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

Allocated

1989-06-21 (ARIN registry date — autnum top-level registration event, NOT an IEEE date; IEEE publishes no ASN registration dates); last changed 2008-08-15 [Confirmed] — ARIN RDAP autnum/301 top-level events

Org status

active U.S. federal government entity (U.S. Air Force / DoD); ARIN record status active; PeeringDB RIR status "ok" (verified 2025-07-17) [Confirmed] — ARIN RDAP autnum/301, peeringdb.com/asn/301

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil (REGIS10-ARIN), +1-844-347-2457 ext. 2; registered address 501 East Moore Dr., Bldg 884, Maxwell AFB, AL 36114 [Confirmed] — RIPEstat abuse-contact-finder, ARIN RDAP autnum/301

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-28 — not in Spamhaus ASN-DROP (425-entry list, AS301 absent), CleanTalk top-300 ASN rankings, or NANOG archives; absence is expected for a non-announcing DoD asset

Network & routing

Network type

U.S. military / government network (DoD / U.S. Air Force); AS301 is legacy and currently inactive [Confirmed] — ARIN RDAP autnum/301, networksdb.io air-force-systems-networking

Size

dark — 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 / bgp.he.net (2026-06)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/323 v4, 0/321 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); 0 observed neighbours; no upstreams or peers visible in any source [Confirmed]. First seen in routing 2012-04-13 (193.105.29.0/24), last seen 2022-11-17 (185.51.78.0/23). Peering policy not publicly disclosed — PeeringDB record sparse, all traffic fields "Not Disclosed"

[Confirmed for the disclosure state] — RIPEstat routing-status, bgp.he.net/AS301, peeringdb.com/asn/301

RPKI

not assessable — AS301 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation skipped (no prefix to validate) [Confirmed] — RIPEstat rpki-validation, routing-status

Notable usage

historically used for internal U.S. Air Force network routing; operationally active in the global table c. 2012–2022, now withdrawn. Formerly associated with the 754th Electronic Systems Group; current registrant is Air Force Systems Networking under DISA Columbus administration [Confirmed for registrant/dates; Likely for 754 ELSG historical association] — bgp.he.net/AS301, ARIN RDAP, togetherweserved.com 754th ESG

Related ASNs

other Air Force Systems Networking / DoD ASNs include AS385 (WPAFB-CSD-NET-AS), AS383 (AFCONC-BLOCK1-AS), AS132, AS399 [Likely — third-party DB attribution] — bgp.he.net/AS385, asrank.caida.org

Analyst note

Encountered as a dark legacy ASN registered to a U.S. DoD / Air Force network operator (AFSN, DISA Columbus). Active c. 2012–2022, withdrawn from global routing since November 2022. Clean, inactive ASN; commercial abuse-feed silence is the norm for non-announcing DoD assets and is not a positive trust signal.