AS221

AS221 is a legacy autonomous system number registered under ARIN to Air Force Systems Networking (AFSN), a U.S. Air Force / Department of Defense networking organization. The AS name, WRALC-HOSTNET-AS, ties the allocation to the Warner Robins Air Logistics Center (WR-ALC) host network at Robins Air Force Base, Georgia — the depot-maintenance and engineering complex that sustains aircraft such as the F-15, C-5, C-130, and C-17. The registrant organization (ARIN handle 7ESG, "Air Force Systems Networking") is addressed at the Gunter Annex of Maxwell AFB, Montgomery, Alabama, and administrative/abuse contact runs through DISA-Columbus (Defense Information Systems Agency), Whitehall, Ohio. The key triage point for AS221 is that it is effectively dormant in the public Internet today: every routing source consulted (RIPEstat, CAIDA AS Rank) agrees it announces zero IPv4 and zero IPv6 prefixes, is seen by 0 RIS peers (0/327 v4, 0/324 v6), and has a customer cone of one (itself). RIPEstat's last BGP sighting was prefix 213.110.96.0/19 for roughly two weeks in March 2010; nothing since. Its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, consistent with complete public routing inactivity — a profile typical of a DoD intranet segment that does not peer publicly. RPKI posture cannot be assessed because there are no active originations and therefore no ROAs. No notable public abuse signal was found as of June 2026 — AS221 is absent from Spamhaus ASN-DROP, the C0nw0nk community ASN blocklist, and shows 0 incidents on Qrator Radar (no leaks, hijacks, bogons, or amplifiers) — consistent with a clean, dormant ASN held by a U.S. government / military operator.

Operator

Air Force Systems Networking (AFSN), U.S. Air Force / DoD (ARIN registrant handle 7ESG; Maxwell AFB, Gunter Annex, Montgomery, AL 36114) [Confirmed] — ARIN RDAP autnum, peeringdb.com/org/20118

Country / RIR

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

Allocated

1988-08-12 (ARIN registry date — autnum top-level registration event; one of the earliest ASN allocations on record); last changed 2008-08-18 [Confirmed] — ARIN RDAP autnum top-level events

Org status

U.S. federal government entity (Air Force Systems Networking); registration status active per ARIN; ASN record last updated 2008-08-18 [Confirmed] — ARIN RDAP

Contacts

admin/abuse via DISA-Columbus — disa.columbus.ns.mbx.arin-registrations@mail.mil / +1-844-347-2457 ext. 2; DISA-Columbus, 300 North James Road, Whitehall, OH 43213; registrant address 501 East Moore Dr, Bldg 884 Rm 1100 Gunter Annex, Maxwell AFB, AL 36114

[Confirmed] — ARIN RDAP, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-19 — absent from Spamhaus ASN-DROP, C0nw0nk ASN blocklist; Qrator Radar shows 0 leaks/hijacks/bogons/loops and 0 amplifiers; no NANOG-archive incidents; clean, dormant US-government ASN

Network & routing

Network type

U.S. military government network; AS221 (WRALC-HOSTNET-AS) was scoped to the Warner Robins Air Logistics Center host network at Robins AFB, GA; legacy/inactive in public BGP [Confirmed for registry facts; Likely for WRALC scope] — ARIN RDAP, en.wikipedia.org/wiki/Warner_Robins_Air_Logistics_Complex

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 (2026-06)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/327 v4, 0/324 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); 0 observed neighbours; no upstreams or peers visible. Last BGP sighting: 213.110.96.0/19, ~2010-03-02 to 2010-03-17 [Confirmed]. No public peering policy disclosed (PeeringDB lists a general-policy org entry only) — RIPEstat routing-status, peeringdb.com/org/20118, bgp.he.net/AS221

RPKI

not assessable — AS221 announces no prefixes, so there are no ROAs to validate; RIPEstat returns "unknown" validation state [Confirmed] — RIPEstat rpki-validation, radar.qrator.net/as/221

Notable usage

AS221 supported the WRALC (Warner Robins Air Logistics Center) host network at Robins AFB, GA. AFSN manages multiple Air Force ASNs; AS221 currently announces zero public prefixes and appears fully internalized within DoD infrastructure [Confirmed for registry; Likely for multi-ASN scope] — peeringdb.com/org/20118, bgp.he.net/AS221

Analyst note

Encountered as a dormant legacy ASN registered to a U.S. Air Force / DoD networking organization (AFSN), scoped to the Warner Robins Air Logistics Center. WHOIS/RDAP resolves cleanly to AFSN with DISA stewardship; no public routing since March 2010. Clean, inactive ASN. Note A2/A5 disagree on the precise operating sub-unit (AFSN program office vs. 754th Electronic Systems Group); registry holder "Air Force Systems Networking" is the Confirmed first-party fact.