AS45

AS45 is a legacy allocation registered under ARIN to Lawrence Livermore National Laboratory (org LLNL-1), a U.S. DOE/NNSA national laboratory, carrying the historical handle "LLL-TIS-AS" — Lawrence Livermore Laboratory, Technology Information System. RFC 1020 (1987) labeled it "LLL-TIS-AS," and the current holder matches; this is LLNL's live, actively-routed AS (in contrast to the sibling AS44, which is dormant). It originates about eleven IPv4 prefixes and one IPv6 prefix (for example 128.15.0.0/16, 128.115.0.0/16, 134.9.x ranges, and 2602:80e:d000::/40), roughly 175,360 IPv4 addresses, single-homed via AS293 (ESnet), with one RPKI-valid and zero invalid. The ARIN ASN RegDate is 1985-07-03 (updated 2011-01-31). For triage this is the active LLNL network reachable via ESnet, carrying benign national-lab traffic. No notable public abuse signal was found as of June 2026.

Operator

Lawrence Livermore National Laboratory (ARIN OrgId LLNL-1) [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN ASN RegDate 1985-07-03 (updated 2011-01-31) [Confirmed]

Org status

active — llnl.gov

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-08; benign national-lab traffic — bgp.he.net

Network & routing

Network type

government / research (US DOE/NNSA national laboratory) [Confirmed]

Size

11 IPv4 prefixes, 1 IPv6 (~175,360 IPv4 addrs); incl. 128.15.0.0/16, 128.115.0.0/16, 2602:80e:d000::/40 — bgp.he.net (2026-06)

Routing/peering

actively announcing; single peer/upstream AS293 (ESnet); RPKI 1 valid, 0 invalid — bgp.he.net

Notable usage

[historical, RFC 1020 + ARIN] AS45 "LLL-TIS-AS" = Lawrence Livermore Laboratory, Technology Information System; LLNL's live actively-routed AS — llnl.gov

Related ASNs

AS44 (LLNL — dormant sibling); AS293 (ESnet — upstream) [Confirmed]

Analyst note

The active LLNL network (single-homed via ESnet); benign national-lab traffic. Sibling AS44 is dormant.