AS124

AS124 is a legacy 1987-era DoD/DNIC allocation registered under ARIN to the United States Department of Defense (OrgId USDDD), carrying the handle "DNIC-AS-00124." This is a notable hand-over case: its historical RFC-era label was "ENCORE-GW-AS / Encore Computer Corporation" — a commercial minicomputer maker — but the current ARIN holder is the generic "United States Department of Defense (DoD)," so the old commercial label no longer reflects the registry. (Encore also appears in this sweep's lineage notes around AS105's Gould/Encore history.) The ARIN RDAP RegDate is 1987-08-28 (Confirmed); RIPEstat confirms AS124 is dormant — 0 announced prefixes in the global routing table. For triage, treat AS124 as a dormant DoD holding. No notable public abuse signal was found as of June 2026.

Operator

United States Department of Defense (DoD) (ARIN OrgId USDDD) [Confirmed] — Potaroo / ARIN. NOT Encore Computer Corporation (historical label).

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN RDAP RegDate 1987-08-28 [Confirmed] — ARIN RDAP

Org status

active org; ASN dormant (0 prefixes confirmed)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal as of 2026-06-10 — bgp.tools

Network & routing

Network type

government / military (DoD) [Confirmed]

Size

confirmed dormant — 0 announced prefixes (IPv4 and IPv6) — RIPEstat (2026-06)

Routing/peering

none — 0 announced prefixes (confirmed dormant); RPKI n/a — RIPEstat

Notable usage

[historical] RFC-era label "ENCORE-GW-AS / Encore Computer Corporation" (commercial minicomputer maker). [current] a DoD DNIC AS — defense.gov

Related ASNs

DoD DNIC family (AS94/AS95/AS96/AS115/AS118/AS121/AS126) [Likely]

Analyst note

Current holder is DoD (USDDD); confirmed dormant (0 announced prefixes, RIPEstat). Notable hand-over — old "Encore Computer" label no longer reflects the holder.