AS310

AS310 is a legacy autonomous system number registered under ARIN to the United States Department of Defense (DoD) and administered by the Defense Information Systems Agency (DISA) through the DoD Network Information Center (DNIC) in Columbus, Ohio. It is not a standalone registration: ARIN RDAP returns the parent block record DNIC-ASBLK-00306-00371 (handle AS306, spanning AS306–AS371) for any individual ASN in this DoD-reserved range, so AS310 inherits the block's top-level registration date of 1989-06-30. The key triage point is that AS310 is effectively dormant today. RIPEstat reports it is not announced — zero IPv4 prefixes, zero IPv6 prefixes, zero announced addresses, and 0 of 323 RIS peers seeing it (0/321 for v6), with 0 observed neighbours. It did route historically: RIPE RIS first saw it on 2009-01-26 (prefix 199.9.88.0/24) and last on 2023-03-23 (prefix 214.15.200.0/24), after which it fell silent. CAIDA timed out, so AS rank and customer cone are unknown. RPKI cannot be assessed because no prefix is currently announced. The DoD NIC, operated by DISA, also runs G.root-servers.net, one of the 13 DNS root nameservers, though that infrastructure is unrelated to AS310's own (absent) routing. No notable public abuse signal was found as of 2026-06-28: CleanTalk reports a 0.00% spam rate, Spamhaus shows no public listing, and no AS310-specific NANOG threads or threat-feed incidents surfaced. Hurricane Electric carries a historical bogon-announcement flag, a routing-classification artifact tied to DoD military IP space (e.g. 214.x ranges), not evidence of abuse — consistent with a clean, inactive federal-government ASN.

Operator

United States Department of Defense (DoD), administered by DISA / DoD Network Information Center (DNIC) [Confirmed] — ARIN RDAP autnum (registrant USDDD), en.wikipedia.org/wiki/Defense_Information_Systems_Agency

Country / RIR

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

Allocated

1989-06-30 (ARIN block registration date for DNIC-ASBLK-00306-00371; a first-party RIR fact, NOT an IEEE date); last changed 2025-09-12 [Confirmed] — ARIN RDAP autnum top-level events

Org status

U.S. federal combat-support agency (DISA, established 1991 from the Defense Communications Agency founded 1960); the DoD NIC manages DoD IP space and ASN blocks [Confirmed] — en.wikipedia.org/wiki/Defense_Information_Systems_Agency

Contacts

NOC/Technical/Abuse disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (handle MIL-HSTMST-ARIN); Registration/Admin disa.columbus.ns.mbx.arin-registrations@mail.mil (handle REGIS10-ARIN); DISA-Columbus, 300 North James Road, Whitehall, OH 43213; +1-844-347-2457

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

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-28 — CleanTalk 0.00% spam, no Spamhaus public listing, no AS310-specific NANOG threads or threat-feed incidents. Hurricane Electric carries a historical bogon-announcement flag = a routing-classification artifact tied to DoD military IP ranges (e.g. 214.x), not abuse evidence

Network & routing

Network type

U.S. federal government / military; AS310 is a legacy DoD-block ASN, currently inactive (0 announced prefixes) [Confirmed] — bgp.tools/as/310, ipinfo.io/AS310

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; 0 observed neighbours [Confirmed] — RIPEstat routing-status (2026-06-27)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/323 v4, 0/321 v6); no upstreams or peers observed; no PeeringDB entry for AS310 [Confirmed] — RIPEstat routing-status / as-overview, bgp.tools/as/310. Historically routed 2009-01-26 (199.9.88.0/24) → 2023-03-23 (214.15.200.0/24)

[Confirmed] — RIPEstat routing-status

RPKI

not assessable — AS310 announces no prefixes, so no ROAs to validate (RIPEstat rpki-validation skipped, no prefix supplied) [Unknown]

AS rank / customer cone

Unknown — CAIDA AS Rank lookup timed out [Unknown]

Notable usage

AS310 is one of ~66 ASNs in the DNIC-ASBLK-00306-00371 block (AS306–AS371) reserved for DoD use since 1989. The DoD NIC (DISA) also operates G.root-servers.net, one of the 13 DNS root nameservers; AS310 itself carries no active prefixes

[Confirmed] — ARIN RDAP, bgp.tools/as/310, icannwiki.org/Defense_Information_Systems_Agency

Related ASNs

AS306–AS371 (entire DNIC-ASBLK-00306-00371 DoD-reserved block; AS310 is one member) [Confirmed] — ARIN RDAP

Analyst note

Encountered as a dormant legacy ASN within the DoD/DNIC reserved block. ARIN RDAP returns the block record (AS306) rather than a per-ASN object; allocated_date is the block's top-level registration event and is recorded as a first-party RIR fact. Clean, inactive ASN.