AS729

AS729 is a dormant, unannounced autonomous system registered under ARIN to Air Force Systems Networking (registrant entity 7ESG), a U.S. Department of Defense network resource administered through DISA-Columbus rather than a commercial operator. Live routing data shows zero IPv4 and zero IPv6 prefixes originated as of 2026-07-25.

The ASN sits inside AFCONC-BLOCK2-AS, an ARIN block spanning AS727 through AS746 — a pattern typical of consecutively allocated DoD ASN ranges rather than a standalone commercial assignment. No public operator website, peering policy page, or PeeringDB listing exists for AS729; a direct PeeringDB API query returned no result.

Routing visibility is uniformly empty across sources: 0 of 331 RIS peers see an IPv4 route and 0 of 324 see an IPv6 route, CAIDA reports zero customer, peer, and provider degree, and the customer cone is a singleton (itself, 0 prefixes, 0 addresses). RPKI posture cannot be assessed because nothing is announced, so there are no ROAs to validate.

The RDAP autnum record's top-level events array carries only a "last changed" entry (2008-06-06) with no "registration" eventAction present at that level; entity-level registration dates on the containing block and registrant objects exist but are not the autnum's own top-level registration event, so the allocation date is recorded here as unresolved rather than invented.

Operator

Air Force Systems Networking (ARIN registrant entity 7ESG); U.S. Department of Defense network resource administered via DISA-Columbus [Confirmed] — ARIN RDAP autnum/729, entity/7ESG

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP autnum/729

Allocated

Unknown — the autnum's top-level RDAP events[] array contains only one entry, eventAction "last changed" (2008-06-06); no "registration" eventAction is present at the top level (entity-level dates on the containing block/registrant objects are not the autnum's own registration event)

[Confirmed absence] — https://rdap.arin.net/registry/autnum/729

Org status

active [Confirmed] — ARIN RDAP autnum/729

Contacts

DISA-Columbus, 300 North James Road, Whitehall, OH 43213; disa.columbus.ns.mbx.arin-registrations@mail.mil [Confirmed] — ARIN RDAP autnum/729

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-25 across bgp.he.net, ipinfo.io, bgp.tools, jamesbrine.com.au; Spamhaus (403) and AbuseIPDB (404) could not be directly verified and are recorded Unknown, not clean

Network & routing

Network type

government/military network (U.S. Air Force), not a commercial ISP or content network [Likely] — ARIN RDAP autnum/729

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat as-overview/routing-status, CAIDA AS Rank (2026-07)

Routing/peering

NOT announced — 0/331 RIS peers see it on IPv4, 0/324 on IPv6; CAIDA degree total 0 (customer 0, peer 0, provider 0); no PeeringDB listing (API query returned no result) [Confirmed]

RPKI

not assessable — AS729 announces no prefixes, so no ROAs exist to validate [Confirmed]

Notable usage

Unknown — no sourced public information found [Unknown]

Related ASNs

AS727–AS746 (AFCONC-BLOCK2-AS, the ARIN block AS729 falls within) [Confirmed] — ARIN RDAP autnum/729

Analyst note

Dormant DoD/USAF ASN within a consecutively-allocated Air Force ASN block; unrouted with zero BGP visibility across all sources checked. Top-level RDAP registration date is genuinely absent from the autnum object, distinct from decoy entity-level event dates (registrant 2008-06-05, later entity registration 2009-06-24) that do not belong to the autnum itself.