AS107

AS107 is a legacy spring-1987 allocation registered under ARIN to a U.S. Air Force / Department of Defense entity, carrying the handle "ECSNET-AS." The current label is "Air Force Systems Networking (AFSN)"; historically it is tied to the 754th Electronic Systems Group, whose AFSN Program Office is located at Maxwell Air Force Base–Gunter Annex, Alabama (per AFCEA SIGNAL and Military & Aerospace Electronics; this corrects an earlier secondary attribution to Oklahoma City/Tinker AFB). Critically for triage, this is NOT the unrelated Austrian "ECSNET-AS" operated by ECS Rockenschaub GmbH, which is AS49864 in the RIPE region — the handles collide but the entities are entirely different. The ARIN RDAP RegDate is 1987-04-28 (Confirmed). It appears dormant / not announcing, typical of legacy DoD ASNs that are registered-but-idle (hence confidence Medium pending a live origin check). For triage, if AS107 ever appears in routing, treat it as U.S. military infrastructure and verify against ARIN RDAP and RPKI. No notable public abuse signal was found as of June 2026.

Operator

Air Force Systems Networking (AFSN) / U.S. Air Force (historically the 754th Electronic Systems Group, Maxwell AFB–Gunter Annex, AL) [Confirmed label] — ARIN / Potaroo. NOT the Austrian ECSNET-AS (AS49864, RIPE).

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN RDAP RegDate 1987-04-28 [Confirmed] — ARIN RDAP

Org status

legacy (government/military), likely dormant

Security/abuse context (NEUTRAL, DATED)

no public abuse signal; neutral DoD legacy allocation as of 2026-06-09 — bgp.potaroo.net

Network & routing

Network type

government / military (U.S. Air Force) [Confirmed]

Size

appears dormant / not announcing — confirm on bgp.he.net — Potaroo (2026-06)

Routing/peering

likely dormant; RPKI n/a — bgp.potaroo.net

Notable usage

[historical] An early U.S. Air Force networking allocation tied to electronic-systems commands (the 754th ELSG / Air Force Systems Networking) — af.mil

Related ASNs

USAF/AFSN allocations (e.g. 7ESG pool AS61/AS65 seen earlier) [Likely]; NOT AS49864 (Austrian ECSNET-AS)

Analyst note

Appears dormant / not announcing — typical of legacy DoD ASNs that are registered-but-idle. If it ever appears in routing, treat as U.S. military infrastructure and verify against ARIN RDAP and RPKI. Disambiguate from the Austrian AS49864.