AS629

AS629 is one of fifty consecutive autonomous system numbers (AS616 through AS665) that ARIN administers as a single DNIC block, "DNIC-ASBLK-00616-00665," registered to the United States Department of Defense. The RDAP record for the block carries a top-level registration event dated 1990-04-19, with the record last changed 2025-09-12, and its registrant handle (USDDD) resolves to a DoD organization headquartered at 3990 E. Broad Street, Columbus, OH — the address associated with DISA's Columbus facility, which functions as the operational registration desk (the "DoD Network Information Center") for this and neighboring military ASN blocks. Unlike a commercial ISP's ASN, AS629 shows no independent operator homepage, no PeeringDB record, and no published peering policy; DISA administers the block generically rather than running AS629 as a distinct public-facing network. Every routing data source consulted — RIPEstat, CAIDA ASRank, Hurricane Electric's BGP Toolkit, and IPinfo — agrees the ASN is currently dark: zero announced IPv4 or IPv6 prefixes, zero BGP peers visible to either the IPv4 or IPv6 RIS collector set, and a CAIDA customer cone that contains only the ASN itself. No RPKI posture applies since nothing is originated, and no public abuse, hijack, or NANOG incident record names AS629 specifically.

Operator

United States Department of Defense (DoD); administered via DISA-Columbus (ARIN handle USDDD; registrant address 3990 E. Broad Street, Columbus, OH 43218) [Confirmed] — https://rdap.arin.net/registry/autnum/629

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/629

Allocated

1990-04-19 — top-level ARIN RDAP registration event on the DNIC-ASBLK-00616-00665 autnum object (AS616–AS665, which contains AS629); last changed 2025-09-12 [Confirmed] — https://rdap.arin.net/registry/autnum/629, https://whois.ipip.net/AS665

Org status

RDAP record status is "active" (registry entry valid); live routing status is inactive/dark per all BGP telemetry checked [Confirmed] — https://rdap.arin.net/registry/autnum/629, https://bgp.he.net/AS629

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (authoritative RIR: ARIN); administered by DISA (help.disa.mil) [Confirmed] — https://stat.ripe.net/AS629, https://help.disa.mil/network-connections/

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-17 — not on the Spamhaus ASN-DROP list, and no NANOG archive thread names AS629 specifically

Network & routing

Network type

government/military, non-commercial; part of a 50-ASN DoD block, currently unannounced/dark [Confirmed] — https://rdap.arin.net/registry/autnum/629

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes announced; CAIDA customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/AS629, https://asrank.caida.org/asns/629

Routing/peering

NOT announced — 0/326 v4 and 0/322 v6 RIS peers see it; CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers visible in any source. No public peering policy exists for this ASN [Confirmed] — https://stat.ripe.net/AS629, https://asrank.caida.org/asns/629

RPKI

not assessable — AS629 originates no prefixes, so there are no ROAs to validate [Confirmed] — https://stat.ripe.net/AS629

Notable usage

no distinct public-facing usage found; AS629 is a reserved/dark slot within the DoD's DNIC-ASBLK-00616-00665 block, with no dedicated operator page or PeeringDB entry [Confirmed] — https://rdap.arin.net/registry/autnum/629

Related ASNs

part of the DNIC-ASBLK-00616-00665 block (AS616–AS665), all registered to the same DoD organization [Confirmed] — https://rdap.arin.net/registry/autnum/629

Analyst note

encountered as a dark/reserved ASN inside a large DoD block administered by DISA-Columbus; the RDAP registration date (1990-04-19) is a block-level top-level event covering AS616–AS665, not a per-ASN allocation record, since ARIN issues these DoD blocks as a unit rather than one autnum object per number.