AS269

AS269 is a legacy autonomous system number registered under ARIN to Incremental Systems Corporation, with the registry name INCSYS-AS. ARIN RDAP places its top-level registration on 1989-02-22, putting AS269 among the earliest blocks of allocated autonomous system numbers (IANA 16-bit block 1–1876, "Assigned by ARIN") — a vintage consistent with an ARPANET/NSFNET-era research or software organization. The registrant org handle is ISC-81, with a recorded address of 319 South Craig Street, Pittsburgh, PA 15213. The ARIN record has not been updated since 1991-01-10, and its sole point of contact — Jonathan C. Shultis (handle JS281-ARIN; technical, administrative, and abuse roles) — has been flagged by ARIN as unvalidated, having returned no response to validation attempts since 2010-06-15. The key triage point for AS269 is that it is effectively dormant: RIPEstat reports zero IPv4 and zero IPv6 prefixes announced, with 0/327 RIS v4 peers and 0/322 RIS v6 peers seeing it and zero observed neighbours. RIPEstat's routing history shows a brief window of visibility — first seen 2022-02-01 (193.164.254.0/23) and last seen 2023-11-25 (a single IPv6 prefix, 2a0e:b107:381::/48) — after which it went dark again. CAIDA AS Rank was unavailable (HTTP 502), so rank, cone, and upstream/peer topology could not be confirmed. No notable public abuse signal was found as of 2026-06-21: AS269 is absent from Spamhaus ASN-DROP, and no spam, hijack, route-leak, or botnet reports surfaced across AbuseIPDB, GreyNoise, Shodan, Censys, NANOG archives, or BGP-incident sources. One caveat worth flagging: the domain incsys.com resolves to a different, unrelated Incremental Systems Corporation (power-system simulation, Issaquah, WA), so no verified website exists for the Pittsburgh registrant of this ASN.

Operator

Incremental Systems Corporation (registry name INCSYS-AS; registrant org handle ISC-81; Pittsburgh, PA) [Confirmed] — ARIN RDAP, whois.arin.net/rest/asn/AS269

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP; RIPEstat abuse-contact-finder (authoritative_rir: arin)

Allocated

1989-02-22 (ARIN RDAP autnum top-level registration event — a first-party RIR fact, not an IEEE date); last changed 1991-01-10 [Confirmed] — ARIN RDAP autnum top-level events

Org status

Dormant / unresponsive — ARIN status active (allocated); POC unvalidated since 2010-06-15; no verified web presence for the Pittsburgh registrant [Confirmed] — ARIN RDAP

Website

Unknown — incsys.com belongs to an unrelated Washington-state company (power-system simulation, Issaquah, WA); no website verified for the Pittsburgh AS269 registrant [Unknown] — incsys.com; ARIN RDAP

Contacts

Jonathan C. Shultis (JS281-ARIN; unvalidated since 2010-06-15) — the POC's personal mailbox and direct line are withheld here, consult the ARIN RDAP record directly; registrant address 319 South Craig Street, Pittsburgh, PA 15213 [Confirmed] — ARIN RDAP; RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-21 — not in Spamhaus ASN-DROP (430-record JSON), AbuseIPDB, GreyNoise, Shodan, Censys, NANOG archives, or BGP-incident sources

Network & routing

Network type

Unknown / effectively dormant; ARIN status "active" (allocated) but no live routing as of 2026 [Confirmed for status; Likely for dormancy] — ARIN RDAP; bgp.tools/as/269

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes [Confirmed] — RIPEstat routing-status (2026-06-21)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/327 v4, 0/322 v6); 0 observed neighbours; no upstreams or peers visible [Confirmed]. Historical visibility: first seen 2022-02-01 (193.164.254.0/23), last seen 2023-11-25 (2a0e:b107:381::/48) [Confirmed] — RIPEstat routing-status

RPKI

not assessable — AS269 announces no prefixes, so there are no ROAs to validate (RIPEstat rpki-validation skipped, no prefix supplied) [Unknown]

AS rank / cone / topology

Unknown — CAIDA AS Rank API returned HTTP 502 [Unknown] — api.asrank.caida.org

Notable usage

among the earliest allocated ASNs (1989-02-22); Jonathan C. Shultis authored software-research technical reports (type systems / formal methods) under Incremental Systems c. 1991 (DTIC ADA240565) [Likely] — ARIN RDAP; apps.dtic.mil/sti/tr/pdf/ADA240565.pdf

Analyst note

Dormant legacy ASN. WHOIS resolves to Incremental Systems Corporation (Pittsburgh), but the ASN carries no live routing and the POC is unresponsive. The incsys.com domain is a separate, unrelated company — do not conflate.