AS215

AS215 is a legacy autonomous system number registered under ARIN in the DoD Network Information Center (DNIC) naming block, with the ARIN registrant of record being Headquarters, USAISC — the United States Army Information Systems Command, headquartered at Fort Huachuca, Arizona. USAISC was redesignated U.S. Army Signal Command in 1996 and superseded by the U.S. Army Network Enterprise Technology Command (NETCOM) on October 1, 2002; the registrant handle (HEADQU-3) has not been refreshed since 2011 and still carries the legacy USAISC name. Administrative, technical, and abuse responsibility sits with DISA-Columbus (Defense Information Systems Agency), 300 North James Road, Whitehall, OH 43213, reachable at disa.columbus.ns.mbx.arin-registrations@mail.mil. The key triage point for AS215 is that it is effectively dormant: every routing source consulted (RIPEstat, CAIDA AS Rank) agrees it announces zero IPv4 and zero IPv6 prefixes, has zero visible BGP peers, zero upstreams, zero customers, and no IXP memberships. It was last visible in global BGP on 2022-12-21 with the single prefix 214.15.215.0/24, first seen 2014-01-29; that prefix falls in DoD address space and is flagged bogon — an artifact of dormancy, not active routing. Its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, and its customer cone is a singleton (the ASN itself, 0 prefixes, 0 addresses). RPKI posture cannot be assessed because there are no active originations and therefore no ROAs. No notable public abuse signal was found as of 2026-06-19 — not in Spamhaus ASN-DROP, CleanTalk, AbuseIPDB, or NANOG archives — consistent with a clean, dormant ASN held by a U.S. military operator.

Operator

Headquarters, USAISC (U.S. Army Information Systems Command; ARIN org handle HEADQU-3, Fort Huachuca, AZ) [Confirmed] — ARIN RDAP autnum/215

Country / RIR

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

Allocated

1988-07-13 (ARIN registry date from autnum top-level events, NOT an IEEE date — IEEE publishes no ASN registration dates); last changed 2011-08-24 [Confirmed] — ARIN RDAP autnum top-level events

Org status

U.S. federal government / military. The registrant organization (USAISC) no longer exists under that name; its successor NETCOM is an active Army command at Fort Huachuca, AZ. DISA-Columbus maintains the ARIN registration

[Confirmed] — ARIN RDAP, en.wikipedia.org/wiki/Army_Network_Enterprise_Technology_Command

Contacts

abuse/technical/administrative disa.columbus.ns.mbx.arin-registrations@mail.mil, +1-844-347-2457 ext 2 (DISA-Columbus, 300 North James Road, Whitehall, OH 43213); registrant org Headquarters USAISC, Fort Huachuca, AZ 85613 [Confirmed] — ARIN RDAP autnum/215

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-19 — not in Spamhaus ASN-DROP, CleanTalk, AbuseIPDB (404, no announced IPs), or NANOG archives; dormant ASN under a U.S. military operator

Network & routing

Network type

U.S. Department of Defense / Army military government network; DoD-legacy ASN under the DNIC (DoD Network Information Center) naming scheme; AS215 is legacy/inactive [Confirmed] — ARIN RDAP, bgp.he.net/AS215

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); no upstreams or peers visible; last seen in BGP 2022-12-21 (prefix 214.15.215.0/24, first seen 2014-01-29) [Confirmed] — RIPEstat routing-status. No PeeringDB entry; no public peering policy

[Likely] — bgp.he.net/AS215

RPKI

not assessable — AS215 announces no prefixes, so there are no ROAs to validate; bgp.he.net shows 0 RPKI-valid and 0 RPKI-invalid origins [Confirmed] — bgp.he.net/AS215

Notable usage

Legacy DoD autonomous system registered in 1988 during the USAISC era of centralizing Army information systems; used for internal Army network routing, not a public-facing or commercial network. Part of the historic DNIC block of DoD AS numbers; its one historical prefix (214.15.215.0/24) is flagged bogon

[Likely] — bgp.he.net/AS215, en.wikipedia.org/wiki/Army_Network_Enterprise_Technology_Command

DNIC context

DNIC = DoD Network Information Center. The DNIC-AS-NNNNN naming convention indicates ASNs registered through the DoD NIC (now DISA-Columbus), which manages ARIN registrations on behalf of DoD components [Confirmed] — ARIN RDAP

Analyst note

Encountered as a dormant legacy ASN registered to a U.S. Army / DoD command. WHOIS resolves to the legacy USAISC name; active successor command is NETCOM. Clean, inactive ASN with no current routing.