AS33

AS33 is a legacy low-number allocation that today is registered under ARIN to HP Inc. of Palo Alto, CA — not DEC, which is a common folklore association for this number. This low ASN was historically tied to Digital Equipment Corporation's Western Research Laboratory (DEC-WRL), and the early NIC label was HP-DIGITAL-33, reflecting the corporate lineage DEC → Compaq (which completed its acquisition of DEC in June 1998) → HP (the HP–Compaq merger completed May 2002) → HPE (the 2015 HP split). The ASN survived those transitions and is now HP Inc. corporate space, actively announcing: Hurricane Electric (snapshot June 2026) shows eight IPv4 prefixes originated and sixteen announced including more-specifics (such as 15.0.64.0/18, 15.65.192.0/21, and 192.56.59.0/24), zero IPv6, and three BGP peers; bgp.tools shows a tighter snapshot with one upstream (AT&T, AS7018), three peers, and two downstreams. No RPKI ROAs were observed, and IP-count snapshots ranged from ~4,608 to ~20,992 across sources/dates. The ARIN ASN RegDate is 1984-09-24 (last updated 2024-10-25); the 2016-08-12 date sometimes cited is the HP Inc. organization (OrgId HPINC) RegDate, not the ASN allocation. For triage this is the critical correction of the batch: despite the DEC folklore, the 2026 registry shows HP Inc.; treat it as HP corporate space, actively routed. No notable public abuse signal was found as of June 2026.

Operator (current)

HP Inc. (ARIN OrgId HPINC / HPINC-Z, Palo Alto, CA) [Confirmed] — ARIN RDAP. NOT DEC.

Country / RIR

US, ARIN [Confirmed]

Allocated

ARIN ASN RegDate 1984-09-24 (updated 2024-10-25) [Confirmed] — ARIN RDAP (verbatim ASNumber:33 block; the 2016-08-12 date is the HPINC org RegDate, not the ASN allocation)

Org status

active; acquired lineage — successor of DEC via Compaq and HP; legacy ASN survived corporate transitions and is now HP Inc.

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-09; clean corporate network — bgp.he.net

Network & routing

Network type

enterprise / legacy corporate [Confirmed]

Size

8 IPv4 prefixes originated / 16 announced (incl. more-specifics), 0 IPv6; ~4,608–20,992 IPv4 addrs (varies by source/date) — bgp.he.net (2026-06) / bgp.tools

Routing/peering

actively announcing; bgp.tools shows 1 upstream (AS7018 AT&T), 3 peers, 2 downstreams (cone 3); AS13979 (AT&T), AS54680 (HP Inc.) also observed; no RPKI ROAs observed — bgp.he.net, bgp.tools

Notable usage

[historical] low ASN tied to DEC Western Research Laboratory (DEC-WRL); early NIC label HP-DIGITAL-33; lineage DEC → Compaq (1998) → HP (2002) → HPE (2015). [current] HP Inc. corporate space (e.g., 15.0.64.0/18) — hp.com

Related ASNs

AS54680 (HP Inc.), AS71 (HP-INTERNET-AS), AS4567 (HPINC, RegDate 1995-04-27), and numerous other HP/HPE ASNs [Confirmed/Likely]

Analyst note

Critical triage correction — despite folklore tying AS33 to DEC, the 2026 registry shows HP Inc.; treat as HP corporate space. Actively routed.