AS683

AS683 is an active, currently-routed autonomous system registered to Argonne National Laboratory (ANL), a U.S. Department of Energy national laboratory in Lemont, Illinois. As of 2026-07-18 it originates 24 IPv4 prefixes and 10 IPv6 prefixes, and every RIPE RIS peer observing routing (325/325 v4, 321/321 v6) sees the announcements — this is a live production network, not a dormant legacy allocation.

The ASN (as-name ARGONNE-AS) was registered under ARIN on 1990-06-14, held under organization handle ANL-13-Z, with a most-recent RDAP status change recorded 2023-03-14. The registrant address is 9700 South Cass Avenue, Argonne, IL 60439, and the RIR record status is active.

AS683 is an institutional/government network, not a commercial ISP or transit provider — it has no self-published peering policy and no PeeringDB org/net record (confirmed via a live API query returning "Entity not found"). External connectivity is provisioned through ESnet (AS293), the Department of Energy's dedicated science-data backbone, rather than announced independently by Argonne itself.

The network supports DOE Office of Science user facilities such as the Advanced Photon Source and the Argonne Leadership Computing Facility, which require high-throughput scientific data transfer; ESnet activated 400 Gbps circuits to Argonne and three other DOE labs in 2023 to meet that demand.

Operator

Argonne National Laboratory (ARIN handle ANL-13-Z; operated under DOE contract by UChicago Argonne, LLC) [Confirmed] — https://rdap.arin.net/registry/autnum/683, https://www.anl.gov/argonne-national-laboratory

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/683

Allocated

1990-06-14 (ARIN RDAP top-level autnum registration event — a first-party RIR fact, not an IEEE/database-artifact date); last changed 2023-03-14 [Confirmed] — https://rdap.arin.net/registry/autnum/683

Org status

active (ARIN RDAP status: active) [Confirmed] — https://rdap.arin.net/registry/autnum/683

Contacts

abuse@anl.gov (abuse contact, RIPEstat); noc@anl.gov (NOC, ARIN RDAP) [Confirmed] — https://stat.ripe.net/data/abuse-contact-finder/data.json?resource=683, https://rdap.arin.net/registry/autnum/683

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-18 across Spamhaus, abuse.ch, AbuseIPDB-derived blocklists, or NANOG archives; the sole NANOG hit is an administrative 1995 topology listing

Network & routing

Network type

DOE national-laboratory government/research network; not a commercial ISP or transit provider [Confirmed] — https://bgp.tools/as/683, https://www.anl.gov

Size

24 IPv4 prefixes (~297,216 addresses) and 10 IPv6 prefixes (16,645 announced /48 blocks); seen by all RIS peers (325/325 v4, 321/321 v6) [Confirmed] — https://stat.ripe.net/AS683, https://stat.ripe.net/data/routing-status/data.json?resource=683

Routing/peering

no PeeringDB org/net record (live query returned "Entity not found"); external connectivity via ESnet (AS293) [Confirmed]; third-party BGP-observed adjacency also lists AS22335 (Metropolitan Research and Education Network) [Likely] — https://www.peeringdb.com/api/net?asn=683, https://bgp.tools/as/683, https://www.es.net/news-and-publications/esnet-news/2023/esnet-turns-on-400g-circuits-to-four-doe-national-labs/

RPKI

not computed this cycle; RIPEstat's rpki-validation endpoint requires a specific announced-prefix argument that wasn't supplied [Unknown] — https://stat.ripe.net/AS683

Notable usage

supports DOE Office of Science user facilities (Advanced Photon Source, Argonne Leadership Computing Facility); ESnet activated 400 Gbps circuits to Argonne in 2023 for high-throughput scientific data transfer

[Confirmed] — https://www.es.net/news-and-publications/esnet-news/2023/esnet-turns-on-400g-circuits-to-four-doe-national-labs/

AS rank / customer cone

CAIDA AS Rank 12698; customer cone = 1 ASN, 28 prefixes, 300,032 addresses (asnDegree total 2 — 0 customer, 0 peer, 2 provider, consistent with the ESnet AS293 upstream plus one further observed provider) [Confirmed] — https://asrank.caida.org/asns/683

Analyst note

live production DOE national-lab network, not dormant. Connectivity runs via ESnet (AS293) rather than self-managed peering. CAIDA AS rank (12698) and customer cone (1 ASN / 28 prefixes / 300,032 addresses) are now recorded; RPKI status remains Unknown this cycle (RIPEstat rpki-validation requires a per-prefix argument).