AS143

AS143 is an early ARIN Autonomous System Number registered on 1987-12-16 to the organization 1881CS/XPC, located at Hill Air Force Base, Utah — a United States Air Force communications unit (the "1881CS" handle corresponds to a USAF communications squadron designation). The ASN carries the name OOG1-AS and is one of the very early, low-numbered assignments from the ARPANET/DDN era. In practical routing terms it is completely dormant: as of June 2026 it announces zero IPv4 prefixes, zero IPv6 prefixes, has zero observed BGP peers, zero upstream transit providers, and zero downstream customers. RIPEstat's RIS data shows it has never been visible in the global routing table going back to at least 2000, and CAIDA marks it as not seen with a connectivity rank of 79,459. There is no PeeringDB record (returns 404) and no operator website. The registered technical contact, Jeff Diehl (handle JD86-ARIN, recorded at GTSI Corp — a federal IT contractor later acquired by UNICOM Global and rebranded UNICOM Government), has been flagged by ARIN as an unvalidated point of contact since 2010-06-14. No public abuse signal, blocklist entry, or routing-security incident was found in any open threat feed as of 2026-06-13 — consistent with an ASN that originates no routable address space and therefore presents no active traffic surface to classify. This is best characterized as a clean, dormant legacy military administrative ASN.

Operator

1881CS/XPC (US Air Force communications unit), Hill Air Force Base, UT, United States; ARIN OrgId 1881CS [Confirmed] — ARIN RDAP (https://rdap.arin.net/registry/autnum/143)

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP / CAIDA (country.iso=US)

AS name

OOG1-AS [Confirmed] — ARIN RDAP. (Some third-party browsers gloss this as "Ogden Air Logistics Complex"; the registry only states OOG1-AS, so the expansion is [Likely] — ipgeolocation.io/browse/asn/AS143)

Allocated

ARIN ASN RegDate 1987-12-16; ASN last updated 1991-01-10 [Confirmed] — ARIN RDAP autnum events

Org status

legacy USAF unit record; GTSI Corp (the technical contact's employer) was acquired by UNICOM Global and rebranded UNICOM Government, Inc. (~2012–2013); no indication the ASN is actively administered [Confirmed] — en.wikipedia.org/wiki/UNICOM_Government; ARIN RDAP

Website

Unknown — no operator website found; gtsi.com on the contact record is the contact's former employer, not the network operator [Confirmed for absence] — ARIN RDAP

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-13; no blocklist, threat-feed, NANOG, or routing-incident records (AbuseIPDB/FraudGuard ASN pages 404) — a dormant ASN with 0 prefixes has no traffic surface to classify

Network & routing

Network type

US Air Force / military communications unit network (legacy); not a commercial ISP [Confirmed] — ARIN RDAP registrant

Size / routing

0 IPv4 prefixes, 0 IPv6 prefixes, 0 addresses announced; not visible to any RIS peer (0/326 v4, 0/320 v6) [Confirmed] — RIPEstat routing-status & announced-prefixes (resource=143); bgp.he.net/AS143; bgp.tools/as/143

Peering / transit

no upstreams, no peers, no customers (CAIDA asnDegree all 0; RIPEstat observed_neighbours=0); cone = 1 ASN / 0 prefixes / 0 addresses [Confirmed] — CAIDA AS Rank (asn=143); RIPEstat routing-status

Peering policy

no PeeringDB record (peeringdb.com/asn/143 → 404); no published policy [Confirmed for absence] — peeringdb.com; bgp.he.net/AS143

RPKI

indeterminate — no prefixes announced, so no ROAs to validate (RPKI validation skipped for lack of a prefix) [Unknown] — canonical ripestat.rpki-validation.skipped

CAIDA rank

79,459; cliqueMember=false; seen=false [Confirmed] — CAIDA AS Rank (asn=143)

Notable usage

dormant legacy ASN; appears never to have been actively used in modern BGP routing [Confirmed for inactivity] — bgp.he.net/AS143; ipgeolocation.io/browse/asn/AS143

Technical/abuse contact

Jeff Diehl (JD86-ARIN), Advanced Systems Division, 4110 LaFayette Center Drive, Chantilly, VA 22021; +1-703-631-3333 (GTSI corporate line); individual mailbox in the ARIN RDAP record — flagged "Unvalidated POC" by ARIN, no response since 2010-06-14

[Confirmed] — ARIN RDAP; RIPEstat abuse-contact-finder

Community mentions

none found in NANOG archives, Reddit, or Hacker News [Unknown] — archive.nanog.org; seclists.org/nanog

Analyst note

clean, dormant legacy military ASN; registry contact stale since 2010. No routable footprint, no abuse history.