asn.dev

Autonomous system

AS11994 CZIO-ASN

Hosting ARIN

IPv4 addresses 29.95K 11 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 1 recorded by PCH
Upstreams 2 5 downstream
Flagged prefixes 0 none

Summary

Cruzio Internet

United States · AI-generated

isp legacy

CZIO-ASN is Cruzio, the independent ISP serving Santa Cruz County, California, with fibre, fixed wireless, business connectivity and colocation. It is an access network, not a hosting or transit business.

What it's used for

  • RIS observes 15 IPv4 prefixes carrying roughly 30,000 addresses and no IPv6, against six neighbours. Thirty thousand addresses behind a handful of upstreams is a regional eyeball ISP: enough space to number subscribers, nowhere near enough peering to be selling wholesale transit.
  • Reverse DNS is dense and first-party. Sampled addresses land on cruzio-<addr>.static.cruzio.net and access-<addr>.static.cruzio.net, with canary.cruzio.com and even an unused-<addr>.cruzio.net placeholder. Static customer naming plus explicit unused-address records is an operator managing its own subscriber pool, and it settles the classification.

Notable

  • The 69.27.176.0/20 is registered to Coastside Net, Inc. and its addresses answer under coastside.net, including a core1 router. That is not a third-party tell: Cruzio and Coastside.Net, the Half Moon Bay ISP, merged at the end of 2021, so this is intra-group space still wearing its old identity.
  • Two smaller blocks are registered to Santa Cruz Community Internet and to the City of Santa Cruz. Announcing a local municipality's and a community network's prefixes is ordinary work for the incumbent independent ISP in the same town.

Interesting

  • The 198.202.199.0/24 sample resolves to um-ece-sw.wb6ece.org, a callsign-shaped hostname, hinting at an amateur-radio or community-network user riding on Cruzio's space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Fremont Cabal Internet ExchangeFremont, United States206.80.238.61

Transit providers

2 upstream, 5 downstream and 7 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC713
AS11404Wave Broadband123

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 11 prefixes · 29.95K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America11

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS11994
Registry name
CZIO-ASN
Registrant
Cruzio
Abuse contact
arin@cruzio.com
Registered
2006-09-18
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
38% valid · 5 valid, 8 with no ROA
ROAs
4 authorising AS11994
ASPA
no ASPA record
IRR
92% registered · 12 of 13 announcements
Route objects
28 naming AS11994

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check