AS662

AS662 is a dormant, unrouted autonomous system number that sits inside a large U.S. Department of Defense reservation and currently announces zero IPv4 or IPv6 prefixes anywhere on the public Internet. It has no individually-dated ARIN record of its own; RDAP resolves it to the flat block DNIC-ASBLK-00616-00665 (AS616–AS665), registered to the DoD (handle USDDD) and administered by DISA-Columbus.

That block-level registration event dates to 1990-04-19, with the record last changed 2025-09-12. Because ARIN issued AS616 through AS665 as a single allocation rather than as 50 separate registrations, this date describes the block, not a standalone event for AS662 specifically — there is no evidence of a later, narrower reallocation.

Routing telemetry is unanimous: RIPEstat, CAIDA AS Rank, bgp.he.net, and bgp.tools each independently report 0 announced prefixes, 0 observed BGP peers, and 0 upstreams or customers for AS662. CAIDA's customer cone is a singleton (the ASN itself), and its AS rank of 79,459 sits near the bottom of the global table — consistent with a reserved-but-inactive number rather than an active edge network.

A secondary aggregator (cidr-report.org) lists AS662 historically under the name PENS-NET-AS, attributed to the Navy Network Information Center (NNIC). This attribution is not corroborated on any DoD- or Navy-owned page and is carried here as a lower-confidence historical note, not a confirmed operator identity distinct from the RIR-registrant DoD.

Operator

United States Department of Defense (DoD), ARIN org handle USDDD; block administered by DISA-Columbus [Confirmed] — https://rdap.arin.net/registry/autnum/662

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/662

Allocated

1990-04-19 (ARIN RDAP autnum top-level registration event for block DNIC-ASBLK-00616-00665, AS616–AS665); last changed 2025-09-12 [Confirmed] — https://rdap.arin.net/registry/autnum/662

Website / PeeringDB

none found; no PeeringDB org/ASN profile exists for AS662 [Unknown] — https://www.peeringdb.com/asn/662

Org status

ARIN RDAP status "active" (record valid, not revoked) [Confirmed] — https://rdap.arin.net/registry/autnum/662

Abuse contact

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (authoritative RIR: ARIN)

Security/abuse context

no notable public abuse signal found as of 2026-07-17 across Spamhaus, abuse.ch, and AbuseIPDB resource pages

Network & routing

Network type

US federal government / military (DoD) flat-block ASN, currently unrouted [Confirmed] — https://rdap.arin.net/registry/autnum/662

Size/routing

0 IPv4 prefixes / 0 addresses, 0 IPv6 prefixes/48s announced; not seen by any of 325 (v4) or 320 (v6) RIS peers [Confirmed] — https://stat.ripe.net/AS662, https://bgp.he.net/AS662, https://bgp.tools/as/662

Customer cone / rank

CAIDA AS rank 79,459; cone = 1 ASN (itself), 0 prefixes, 0 addresses; degree total 0 (customer/peer/provider all 0) [Confirmed] — https://asrank.caida.org/asns/662

RPKI

not assessable — no announced prefixes, therefore no ROAs [Confirmed] — https://bgp.tools/as/662

Historical name

PENS-NET-AS, attributed to Navy Network Information Center (NNIC) in a secondary IRR aggregator [Likely] — https://www.cidr-report.org/as4637/autnums.html

Registrant address

DISA-Columbus, 300 North James Road, Whitehall, OH 43213 (contact); org address 3990 E. Broad Street, Columbus, OH 43218 [Confirmed] — https://rdap.arin.net/registry/autnum/662