AS718

AS718 is a dormant, unrouted legacy autonomous system registered to the United States Department of Defense (DoD) under ARIN's DNIC (Defense/military) block, currently announcing zero IPv4 and zero IPv6 prefixes anywhere in the public routing table.

The ARIN RDAP registry lists the autnum's RIR handle as DNIC-AS-00718, status active, with contacts under "Network DoD" at DISA-Columbus (300 North James Road, Whitehall, OH 43213) and the registrant org listed as USDDD (3990 E. Broad Street, Columbus, OH 43218).

Routing data is unanimous across sources: RIPEstat shows 0 of 328 RIS peers seeing it on IPv4 and 0 of 324 on IPv6; CAIDA AS Rank places it at 79,459 with zero total degree (no customers, peers, or providers) and a customer cone of just itself, 0 prefixes, 0 addresses; bgp.tools and bgp.he.net independently corroborate zero originated prefixes and zero observed peers. RPKI posture is not assessable since there are no announced routes to validate.

The autnum's own top-level RDAP events[] carries only a "last changed" entry (2025-09-12); it has no top-level "registration" event, so the allocation date is genuinely absent from the authoritative record. A separate research angle surfaced a 2007-01-12 date, but that belongs to the nested USDDD *entity* object, not the autnum itself, and per this project's decoy rule should not be substituted in; it is recorded here only as a caveat.

No operator-official page documenting AS718's specific purpose was located — DISA's own site renders as an unpopulated JavaScript shell via automated fetch — and PeeringDB has no net object for this ASN (404), consistent with a non-commercial, non-advertising government allocation rather than an actively operated network.

Exposure

none observed — AS718 originates zero IPv4/IPv6 prefixes, so it has no live announced address space to serve as an attack or scanning source at this time.

Abuse signal

no notable public abuse reports found as of 2026-07-25, but this is a partial check — Cisco Talos and Spamhaus lookups returned errors (403/404) rather than confirmed-clean results, and WebSearch was unavailable all session.

RPKI

not assessable — zero announcements means no ROAs exist to validate against.

Registry hygiene

RDAP object is well-formed and status active, with a current abuse contact (disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil) on file via RIPEstat's abuse-contact-finder.

Operator

United States Department of Defense (DoD); ARIN RIR handle DNIC-AS-00718 [Confirmed] — https://rdap.arin.net/registry/autnum/718

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/718

Allocated

Unknown — the autnum's top-level RDAP events[] contains no "registration" event, only a "last changed" event dated 2025-09-12; independently re-verified with a full (non-truncated) re-fetch [Confirmed for the absence]. A 2007-01-12 date exists but is attached to the nested USDDD entity object, not the autnum top-level, and is excluded as a per-instruction decoy

[Likely misattributed if used] — https://rdap.arin.net/registry/autnum/718

Org status

active per ARIN RDAP autnum status field [Confirmed] — https://rdap.arin.net/registry/autnum/718

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil; tel +1-844-347-2457 ext2; DISA-Columbus, 300 North James Road, Whitehall, OH 43213 [Confirmed] — https://stat.ripe.net/AS718, https://rdap.arin.net/registry/autnum/718

Security/abuse context (NEUTRAL, DATED, PARTIAL)

no notable public abuse signal found as of 2026-07-25; Talos and Spamhaus lookups errored rather than confirming clean; ASN is currently unrouted, limiting abuse surface

Network & routing

Network type

Unrouted/legacy DoD DNIC-block ASN; not publicly documented in operator terms [Likely] — https://bgp.he.net/AS718, https://rdap.arin.net/registry/autnum/718

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses, 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/AS718, https://asrank.caida.org/asns/718

Routing/peering

NOT announced — 0/328 RIS peers (v4), 0/324 (v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); no upstreams or peers in any source; no PeeringDB net object (404) [Confirmed] — https://stat.ripe.net/AS718, https://asrank.caida.org/asns/718, https://www.peeringdb.com/api/net?asn=718

RPKI

not assessable — zero announced prefixes means no ROAs exist to validate [Confirmed] — https://stat.ripe.net/AS718

Notable usage

Unknown — no operator-official or third-party source documents a specific purpose for AS718; DISA's own site is an unrendered JS SPA inaccessible to automated fetch [Unknown] — https://rdap.arin.net/registry/autnum/718

Related ASNs

Unknown — no confirmed sibling ASNs within the DoD DNIC block were verified this pass [Unknown]

Analyst note

AS718 is a fully dormant DoD-registered ASN with no announced routes across every routing source checked. Two research angles disagreed on allocated_date (2007-01-12 vs. absent); the routing angle independently re-verified the RDAP autnum's top-level events[] and confirmed no registration event exists there, so allocated_date is recorded as null rather than substituting the entity-level date. WebSearch was unavailable all session (budget exhausted), so notable-usage and deeper abuse-history research is incomplete and should be re-run in a future cycle.