AS659

AS659 is a legacy autonomous system number carved from ARIN's DNIC-ASBLK-00616-00665 block, a single registration handle spanning AS616 through AS665, allocated to the United States Department of Defense on 1990-04-19 per the block's top-level RDAP registration event. There is no individual per-ASN RDAP record for AS659; it inherits the block's registrant (USDDD, address 3990 E. Broad Street, Columbus, OH) and its administrative/technical contacts route through DISA-Columbus. Every routing source consulted — RIPEstat, CAIDA AS Rank, bgp.he.net, and bgp.tools — agrees the ASN is currently unrouted: zero IPv4 prefixes, zero IPv6 prefixes, zero observed BGP peers, and a customer cone limited to itself. Its only recorded historical announcement was a single prefix, 199.208.135.0/24, visible in RIPEstat's routing-status data from 2000-08-25 through 2001-07-28, after which the ASN appears to have gone dormant. CAIDA ranks it 79,459, near the bottom of the global ranking, consistent with long-term inactivity. No PeeringDB network profile exists for AS659, and no dedicated operator webpage was found; general DoD/DISN peering doctrine restricts Internet peering to CIO-approved gateways, but no AS659-specific policy document surfaced. Targeted searches of Spamhaus, Cisco Talos, VirusTotal, GreyNoise, CleanTalk, and NANOG mailing-list archives found no abuse, hijacking, or blocklisting entries naming AS659 specifically, consistent with an ASN that presents no routed attack surface.

Operator / registrant

United States Department of Defense (DoD), administered via the DoD Network Information Center (DNIC); block name DNIC-ASBLK-00616-00665, registrant handle USDDD, 3990 E. Broad Street, Columbus, OH 43218 [Confirmed] — https://rdap.arin.net/registry/autnum/659

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/659, RIPEstat as-overview (authoritative_rir: arin)

Allocated

1990-04-19 (ARIN RDAP autnum TOP-LEVEL registration event for the block, corroborated by bgp.tools "allocated since April 19, 1990"); last changed 2025-09-12. Entity-level dates (e.g. MIL-HSTMST-ARIN 1993-05-26, REGIS10-ARIN 2009-06-24, USDDD org record 2007-01-12) are contact/org-record dates, not used for allocated_date

[Confirmed] — https://rdap.arin.net/registry/autnum/659, https://bgp.tools/as/659

Org status

active per ARIN RDAP (block status: active) [Confirmed] — https://rdap.arin.net/registry/autnum/659

Contacts

DISA-Columbus hostmaster (disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil), +1-844-347-2457 ext 2, 300 North James Road, Whitehall, OH 43213 — sourced from the block registration, not AS659-specific [Confirmed] — https://rdap.arin.net/registry/autnum/659, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-17 — not in Spamhaus DROP/ASN-DROP, Cisco Talos, VirusTotal, GreyNoise, CleanTalk, or NANOG mailing-list archives; consistent with an unrouted ASN presenting no attack surface [Likely] — https://www.spamhaus.org/blocklists/do-not-route-or-peer/, https://talosintelligence.com/reputation_center, https://seclists.org/nanog/

Network & routing

Network type

government/military — legacy DoD DNIC ASN block, DISA-operated DISN/NIPRNet infrastructure context [Likely] — https://rdap.arin.net/registry/autnum/659, https://dl.dod.cyber.mil/wp-content/uploads/connect/pdf/unclass-DISN_CPG.pdf

Size

dormant — 0 IPv4 prefixes / 0 addresses and 0 IPv6 prefixes announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status/announced-prefixes, CAIDA ASRank, https://bgp.he.net/AS659, https://bgp.tools/as/659 (checked 2026-07-18)

Routing/peering

NOT currently announced — 0/325 v4 and 0/320 v6 RIS peers seeing it; CAIDA degree total 0 (customer 0, peer 0, provider 0); no PeeringDB network entry exists for AS659 (the DoD org's PeeringDB listing of 21 ASNs does not include it)

[Confirmed] — RIPEstat routing-status API, https://www.peeringdb.com/org/17705

RPKI

not assessable — no currently announced prefixes, so no ROAs to validate; bgp.he.net independently shows 0 RPKI-valid and 0 RPKI-invalid origins [Confirmed] — https://bgp.he.net/AS659

Related ASNs

part of the shared DNIC-ASBLK-00616-00665 block (AS616–AS665, single registration covering the whole range); related DoD DNIC ASNs discussed in NANOG archives include AS345, AS367, AS721 [Confirmed for block range; Likely for related-ASN community context] — https://rdap.arin.net/registry/autnum/659, https://mailman.nanog.org/pipermail/nanog/2024-July/225878.html

Historical announcement

only ever observed announcing 199.208.135.0/24, first seen 2000-08-25, last seen 2001-07-28; dormant since [Confirmed] — RIPEstat routing-status API

Analyst note

AS659 has no individual RDAP record, no PeeringDB profile, and no dedicated operator webpage; it is one of 50 ASNs (616–665) covered by a single DoD block registration. Routing data is unanimous across four independent sources that it is currently dormant, with a brief historical announcement window in 2000–2001.