AS418

AS418 is a legacy 16-bit autonomous system number registered under ARIN to Air Force Systems Networking (ARIN org handle 7ESG), a U.S. Department of Defense network operator administered by the Defense Information Systems Agency (DISA). The registrant address is at Maxwell Air Force Base, Alabama, and the abuse/registration point of contact (REGIS10-ARIN) is DISA-Columbus in Whitehall, Ohio. AS418 does not carry its own discrete ARIN RDAP object: a query for autnum/418 resolves to the shared parent block record AFCONC-BLOCK1-AS, which spans startAutnum 379 through endAutnum 508 and carries handle AS379 — a single legacy block registration covering many contiguous Air Force ASNs. RIPEstat and CAIDA both independently confirm resource 418 with the same holder name, so the identification is solid even though the dates and handle inherit from the enclosing block. The key triage point is that AS418 is effectively dormant: every routing source consulted agrees it announces zero IPv4 and zero IPv6 prefixes, is seen by zero RIS peers (0 of 324 v4, 0 of 320 v6), has a CAIDA AS-degree of zero (no customers, peers, or providers), and a customer cone of just itself. Its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, reflecting complete routing inactivity. RPKI posture cannot be assessed because there are no active originations and therefore no ROAs to validate. No notable public abuse signal was found as of July 2026 — not in Spamhaus, AbuseIPDB, or NANOG archives — consistent with an unrouted, dormant legacy DoD/USAF allocation.

Operator

Air Force Systems Networking (ARIN org handle 7ESG; U.S. Air Force / DoD, administered by DISA); registrant address Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP autnum/418 (registrant 7ESG)

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin)

Allocated

1989-08-04 (ARIN registry top-level autnum registration event on the parent block record AFCONC-BLOCK1-AS / AS379–508; a first-party RIR fact, not an IEEE date); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum top-level events

Org status

active per ARIN RDAP status array (inherited from parent block record AS379/AFCONC-BLOCK1-AS); no operator-official confirmation of current operational routing; third-party BGP data indicates currently dormant/unannounced [Confirmed for RDAP status; Likely dormant] — ARIN RDAP autnum/418, bgp.he.net/AS418

Contacts

abuse/registration disa.columbus.ns.mbx.arin-registrations@mail.mil; +1-844-347-2457 ext2; REGIS10-ARIN / DISA-Columbus, 300 North James Road, Whitehall, OH 43213; registrant 501 East Moore Dr., Bldg 884, Rm 1100, Gunther Annex, Maxwell AFB, AL 36114 [Confirmed] — ARIN RDAP autnum/418

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — no AS418-specific hits in Spamhaus, AbuseIPDB, or NANOG archives; search noise from Alaska Airlines flight AS418 and SAE standard AS418 was excluded. Absence-of-evidence on an unrouted ASN, not a clean bill on active traffic

Network & routing

Network type

U.S. government / military network (DoD / U.S. Air Force), not a commercial ISP/hosting/content network; AS418 is a within-block legacy number and is currently unrouted [Confirmed] — ARIN RDAP autnum/418; corroborated by bgp.he.net/AS418

Size

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

Routing/peering

NOT announced — 0 RIS peers seeing it (0/324 v4, 0/320 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); 0 observed neighbours; no upstreams or peers visible in any source [Confirmed] — RIPEstat routing-status, CAIDA AS Rank. No PeeringDB network record for AS418 (404); DISA gates external connectivity centrally via DISN, not per-ASN

[Likely] — peeringdb.com/asn/418

RPKI

not assessable — AS418 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation was skipped (requires a prefix parameter) [Confirmed] — RIPEstat rpki-validation

Notable usage

none documented on any operator-official source. AS418 is a within-block number of the historical AFCONC-BLOCK1-AS allocation (AS379–508) reserved for U.S. Air Force use; currently unrouted per third-party BGP data [Confirmed] — bgp.he.net/AS418, ARIN RDAP autnum/418

Related ASNs

part of the contiguous AFCONC-BLOCK1-AS block AS379–AS508 (siblings include AS379, AS385, AS386, AS390, AS391, AS400) held by the same 7ESG Air Force Systems Networking org [Confirmed for block range; Likely for specific sibling list per third-party DB] — ARIN RDAP autnum/418 (startAutnum 379, endAutnum 508)

Analyst note

RDAP for autnum/418 returns the enclosing AS379–508 block record (handle AS379), so 1989-08-04 is the whole block's registration date, not an AS418-individual timestamp; recorded per the first-party RIR rule. AS418 is unrouted (0 prefixes, 0 peers) — same block pattern as processed siblings, distinguished by zero BGP visibility.