AS245

AS245 is a low-numbered legacy autonomous system registered under ARIN to Planning Research Corporation (PRC-AS), with a registry address at 1410 Wall Street, Bellevue, Nebraska. It dates to the early commercial-Internet era — the ARIN autnum top-level registration event is 1988-10-21 — and the registrant organization, Planning Research Corporation, was a US government IT and systems-analysis contractor founded in 1954 that no longer exists as an independent entity, having passed through Emhart, Advanced Technology (forming PRC Inc. in 1991), Litton Industries (1996) and ultimately into Northrop Grumman. The triage point for AS245 is that it is effectively dormant: every routing source consulted (RIPEstat, CAIDA AS Rank, bgp.he.net) agrees it currently announces zero IPv4 and zero IPv6 prefixes, is seen by 0 of 327 RIS peers, has 0 observed BGP neighbours, and shows CAIDA degree 0 across customer/peer/provider with a singleton customer cone. Its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, consistent with complete routing inactivity. RIPEstat routing-status retains brief historical originations (130.222.0.0/16 last seen 2026-02-06; 160.104.0.0/16 first seen 2025-12-01) that reflect short-lived table records rather than ongoing service, and Hurricane Electric carries a legacy "announces bogons" annotation that no longer maps to any live bogon advertisement. The community-facing signal worth recording is that AS245 appears on the Spamhaus ASN-DROP list — a first-party authoritative flag consistent with an abandoned/hijack-prone legacy allocation — even though no specific incident, NANOG thread, or threat-feed entry naming AS245 could be independently verified as of June 2026.

Operator

Planning Research Corporation (ARIN handle PRC-AS / org PRC; Bellevue, NE) [Confirmed] — ARIN RDAP autnum 245, peeringdb.com/asn/245

Country / RIR

US, ARIN (American Registry for Internet Numbers) [Confirmed] — ARIN RDAP, RIPEstat abuse-contact-finder (authoritative_rir: arin)

Allocated

1988-10-21 (ARIN registry date — autnum TOP-LEVEL registration event, NOT an IEEE date; IEEE publishes no ASN dates); last changed 2015-06-16 [Confirmed] — ARIN RDAP autnum top-level events

Org status

Planning Research Corporation no longer exists as an independent entity; founded 1954, absorbed via Emhart → PRC Inc. (1991) → Litton Industries (1996) → Northrop Grumman. ARIN address (1410 Wall Street, Bellevue, NE) is a legacy/subsidiary address

[Likely] — bgp.he.net/AS245, en.wikipedia.org/wiki/Northrop_Grumman, ARIN RDAP

Contacts

technical/abuse contact is an individual, Steve Sidner (ARIN handle NETAD211-ARIN, validated), reachable through the ARIN RDAP record; RIPEstat's abuse-contact-finder returns a University of Nebraska Medical Center mailbox for the same person; older unvalidated POC SS172-ARIN (University of Nebraska Medical Center, Eppley Institute, Omaha NE)

[Confirmed] — ARIN RDAP, RIPEstat abuse-contact-finder (personal contact details omitted here)

Website

prcnetwork.com listed in PeeringDB and HE.net, but the domain did not resolve (ECONNREFUSED) at research time [Likely] — peeringdb.com/asn/245, bgp.he.net/AS245

Security/abuse context (NEUTRAL, DATED)

AS245 is listed on the Spamhaus ASN-DROP list (first-party flag, consistent with an abandoned/hijack-prone legacy allocation) [Confirmed] — spamhaus.org/drop/asndrop.json. No incident-specific abuse signal could be independently verified as of 2026-06-20: Spamhaus check, AbuseIPDB (404), and CleanTalk (403) endpoints were inaccessible; no NANOG threads or BGP-hijack reports naming AS245 were found

Network & routing

Network type

legacy enterprise/research network; IPv4-only, no documented IPv6 presence; dormant legacy allocation [Confirmed] — bgp.he.net/AS245, ARIN RDAP

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; CAIDA customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status, CAIDA AS Rank (rank 79459)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/327 v4, 0/324 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); 0 observed neighbours; no upstreams or peers visible [Confirmed] — RIPEstat routing-status, CAIDA AS Rank. Historical routing only: 130.222.0.0/16 last seen 2026-02-06, 160.104.0.0/16 first seen 2025-12-01

[Confirmed] — RIPEstat routing-status

Peering policy

PeeringDB record marks policy Open (no contract/ratio requirements); no IX memberships or facilities listed; no public peering policy document found (last PeeringDB update 2025-11-07) [Likely] — peeringdb.com/asn/245

RPKI

not assessable — AS245 announces no prefixes, so there are no ROAs to validate; bgp.he.net shows no RPKI-valid origins [Confirmed] — bgp.he.net/AS245

Notable usage

Planning Research Corporation provided research, systems analysis and IT services to the US government and defense sector; AS245 is a legacy enterprise ASN from the early Internet era with no active routing presence [Likely] — computerhistory.org PRC/Mesa Scientific brochure, bgp.he.net/AS245

Analyst note

Encountered as a dormant low-numbered legacy ASN with a defunct registrant org and a Spamhaus DROP listing; WHOIS resolves to Planning Research Corporation but there is no active routing. allocated_date read from the autnum TOP-LEVEL registration event (1988-10-21), not from nested entity decoys (org PRC last-changed 2018-01-30; contact SS172 registered 1988-04-07).