AS36

AS36 is a legacy allocation registered under ARIN to SRI International, the Menlo Park research institute, and its handle preserves a piece of early Internet history: "EGP-TESTOR" denotes an Exterior Gateway Protocol testing AS that SRI operated in the early Internet, a relic of EGP-era routing experimentation that predated BGP. The key triage point is that the ASN is dormant: Hurricane Electric shows zero prefixes originated, zero announced, and zero BGP peers observed as of 2026, so it is registered but not announcing. Because it announces nothing, any traffic claiming to originate from AS36 should be treated as anomalous or suspicious. The ARIN ASN RegDate of 1985-01-04 is the registry date (autnum updated 2023-11-01, org record updated 2025-04-09). It shares an operator with AS30 (SRI-AICNET). No notable public abuse signal was found as of June 2026.

Operator

SRI International (ARIN OrgId SRIINT-Z, Menlo Park, CA) [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN ASN RegDate 1985-01-04 (registry date; autnum updated 2023-11-01, org updated 2025-04-09) [Confirmed]

Org status

registered but dormant (not announcing routes)

Security/abuse context (NEUTRAL, DATED)

not announcing; no notable public abuse signal found as of 2026-06-08 — bgp.he.net

Network & routing

Network type

research / non-profit R&D institute [Confirmed]

Size

0 prefixes originated, 0 announced — dormant — bgp.he.net (2026-06)

Routing/peering

none — 0 BGP peers observed; RPKI none (no announcements) — bgp.he.net

Notable usage

[historical] "EGP-TESTOR" = an Exterior Gateway Protocol testing AS operated by SRI in the early Internet, a relic of EGP-era routing experimentation predating BGP. [current] held by SRI International, dormant — sri.com

Related ASNs

AS30 (SRI-AICNET, also SRI International) [Confirmed]

Analyst note

A registered-but-dormant historical allocation. Because it announces nothing, any traffic claiming to originate from AS36 should be treated as anomalous/suspicious.