AS765

AS765 is a dormant legacy ASN allocated to the United States Department of Defense (DoD) through the DoD Network Information Center (DNIC-AS-00765), and it has not announced any prefixes in the global routing table since 2011. ARIN RDAP lists the autnum's registry status as active, but Hurricane Electric's BGP toolkit and RIPEstat's routing-status data both confirm zero current announcements — 0/330 RIS peers see it on IPv4 and 0/323 on IPv6.

The ASN was registered on 1990-10-16, per the top-level registration event on ARIN's autnum RDAP record (its own last-changed event is 2025-09-12). The registrant organization is USDDD (United States Department of Defense), whose ARIN org record shows a separate registration date of 2007-01-12 for the org entity itself — a distinct RDAP object from the AS765 autnum and not to be conflated with the 1990 allocation date. The address of record is 3990 E. Broad Street, Columbus, OH, the DISA-Columbus facility that administers legacy DoD networking.

Historical BGP data shows AS765 originated a handful of IPv4 blocks — first seen announcing 164.117.0.0/16 on 2000-08-18 and last seen announcing 164.117.0.0/18 on 2011-08-15 — with AS27064 (also DoD Network Information Center) as its only observed peer. CAIDA AS Rank places it at 79,459, absent from CAIDA's current AS-topology graph (seen=false), with a singleton customer cone (1 ASN, 0 prefixes, 0 addresses) and zero degree across customer, peer, and provider relationships, consistent with total routing dormancy.

No PeeringDB network record exists for AS765 (an API lookup for asn=765 returned HTTP 404), and no dedicated public operator or peering-policy page was found; the DoD Information Network (DODIN) program page at cyber.mil/dodin sits behind an SSO login wall and was not used as a source. RPKI posture cannot be assessed because the ASN has no live announced routes to validate against a ROA.

Operator

United States Department of Defense (DoD), via the DoD Network Information Center (DNIC-AS-00765; org handle USDDD) [Confirmed] — ARIN RDAP autnum https://rdap.arin.net/registry/autnum/765

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP autnum

Allocated

1990-10-16 (ARIN RDAP autnum top-level registration event); RDAP record last changed 2025-09-12 [Confirmed] — ARIN RDAP autnum

Org status

active (ARIN RDAP autnum status = active); registrant org USDDD (United States Department of Defense) is an active ARIN org entity [Confirmed] — ARIN RDAP autnum, whois.arin.net org record for USDDD

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (ARIN RDAP Abuse role, entity MIL-HSTMST-ARIN); address on record 3990 E. Broad Street, Columbus, OH 43218 (DISA-Columbus) [Confirmed] — ARIN RDAP autnum

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-28 — not in Spamhaus's ASN-DROP list; a Talos reputation lookup and NANOG archive search returned no data (404s), so absence of discussion is not fully confirmed, only that no positive hits were found

Network & routing

Network type

government/military — legacy DoD Network Information Center (DNIC) allocation, associated with the DoD Information Network (DODIN) [Likely] — ARIN RDAP, bgp.he.net/AS765

Size

dormant — 0 IPv4 prefixes / 0 addresses and 0 IPv6 prefixes currently announced; historical high-water mark was a /16 (65,536 addresses) first seen 2000, dropping to a /18 (16,384 addresses) before going dark in 2011 [Confirmed] — RIPEstat routing-status

Routing/peering

NOT currently announced — 0/330 RIS peers (v4), 0/323 (v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); customer cone is a singleton (itself, 0 prefixes, 0 addresses); historical sole peer was AS27064 (DoD Network Information Center), last seen 2011-08-15

[Confirmed] — RIPEstat routing-status, CAIDA ASRank

RPKI

not assessable — no live announced prefixes to validate against a ROA [Unknown]

Notable usage

DNIC-block DoD ASN; historically announced 164.117.0.0/16 (first seen 2000-08-18) narrowing to 164.117.0.0/18 (last seen 2011-08-15) before going fully dark; no public operator/peering-policy page found and no PeeringDB network record exists (404 on asn=765 lookup) [Confirmed for routing history; Confirmed for PeeringDB absence] — bgp.he.net/AS765, peeringdb.com/api/net?asn=765

Related ASNs

AS27064 (DoD Network Information Center; sole historical BGP peer of AS765) [Confirmed] — bgp.he.net/AS765

Analyst note

Dormant DNIC-block DoD ASN, unrouted since 2011. Two distinct ARIN dates exist and must not be conflated — the AS765 autnum's own top-level registration event (1990-10-16, recorded here as allocated_date per project convention) versus the separate USDDD org entity's own registration date (2007-01-12). No dedicated public website or peering policy exists for this ASN; the DODIN program page sits behind an SSO login wall and was excluded as a source.