AS550

AS550 is an autonomous system number registered under ARIN to Los Alamos National Laboratory (LANL), the U.S. Department of Energy/NNSA national research laboratory managed by Triad National Security, LLC. The ARIN RDAP autnum record's top-level registration event dates the allocation to 1989-11-13, with a last-changed event of 2025-11-18; the RDAP status is active. Despite that active registry status, AS550 is not currently visible in the global routing table: RIPEstat's routing-status and announced-prefixes datasets both show zero announced IPv4 and IPv6 prefixes across all RIS peers, and bgp.he.net corroborates with a specific detail — AS550 has not been visible in the global routing table since January 25, 2024. CAIDA's ASRank places it at a very low rank (79,459) with a customer cone containing only itself and zero AS-degree in every direction (customer, peer, provider), consistent with a dormant, unannounced ASN. No PeeringDB network record was found (the /asn/550 page and API query both return HTTP 404), and no dedicated LANL network or peering-policy page surfaced in web search, so peering policy and network classification are reported honestly as unknown rather than guessed. No notable public abuse signal was found for AS550 itself; separate, well-documented institutional cybersecurity incidents at LANL the organization are not ASN-level abuse and are excluded from this record. Community sources (NANOG archives, general networking forums) show no specific discussion of AS550.

Operator / registrant

Los Alamos National Laboratory (LANL-2-Z), managed by Triad National Security, LLC for the U.S. DOE's National Nuclear Security Administration [Confirmed] — https://rdap.arin.net/registry/autnum/550, https://www.lanl.gov/

RIR / registry name

ARIN; autnum name CORNETT-AS [Confirmed] — https://rdap.arin.net/registry/autnum/550, https://stat.ripe.net/data/as-overview/data.json?resource=AS550

Allocated date

1989-11-13 — ARIN RDAP autnum TOP-LEVEL registration event (distinct from nested entity/POC events, which are unrelated last-changed dates for contact handles) [Confirmed, corroborated by two independent angles reading the same top-level event] — https://rdap.arin.net/registry/autnum/550

Abuse contact

csirt@lanl.gov

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found for AS550 as of 2026-07-11 across NANOG archives and abuse/reputation search terms; separate LANL institutional cybersecurity incidents are organizational, not ASN-level abuse, and are not attributed here

Network & routing

Routing status

NOT currently announced — 0 IPv4 and 0 IPv6 prefixes across all RIS peers (0/327 v4, 0/322 v6); "has not been visible in the global routing table since January 25, 2024" per bgp.he.net [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=550, https://stat.ripe.net/data/announced-prefixes/data.json?resource=550, https://bgp.he.net/AS550

CAIDA AS Rank

79,459; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses; AS-degree customer/peer/provider all 0 [Confirmed] — https://api.asrank.caida.org/v2/restful/asns/550

Peering policy

Unknown — no PeeringDB network record exists (asn/550 page and API both return HTTP 404, ambiguous between "no record" and a blocked fetch); no dedicated LANL peering-policy page found [Unknown] — https://www.peeringdb.com/asn/550

Network type

Unknown / not publicly self-classified — LANL is a DOE/NNSA national laboratory whose public site exposes only internal IT portal links, with no page describing AS550 as enterprise, NSP, or otherwise [Unknown] — https://www.lanl.gov/

Notable usage

Unknown — no official source ties specific network usage (e.g. supercomputing, ESnet peering) to AS550 by name [Unknown] — https://www.lanl.gov/

RPKI posture

not meaningfully assessable — no announced prefixes to validate ROAs against; bgp.he.net shows an all-zero RPKI validation record [Unknown] — https://bgp.he.net/AS550

Geo footprint

United States; registrant address Los Alamos, NM 87545 [Confirmed] — https://rdap.arin.net/registry/autnum/550

Related ASNs

an unverified web-search aside suggests LANL may also hold AS68 and AS1829 as separate ASNs; not confirmed against primary RDAP data for this task and not folded into AS550's record [Unknown] — https://bgp.tools/as/68

Last changed

2025-11-18 — ARIN RDAP autnum top-level "last changed" event [Confirmed] — https://rdap.arin.net/registry/autnum/550

RDAP / org status

active [Confirmed] — https://rdap.arin.net/registry/autnum/550

Historical peers (stale, pre-dormancy)

bgp.he.net's historical table lists two IPv4 peer observations (AS58552, AS64300, both Indonesian networks) that predate the 2024 dormancy and do not fit LANL's profile — flagged as likely stale/anomalous route-collector artifacts, not current relationships

[Likely, low confidence] — https://bgp.he.net/AS550