asn.dev

Autonomous system

AS27009 CUSD

Unclassified ARIN

IPv4 addresses 5.12K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Clovis Unified School District

United States of America · AI-generated

education k12 us school

The AS handle CUSD is operated by Clovis Unified School District.

What it's used for

  • The address space carries the district's network infrastructure, identified by the netname CLOVISUSD on both announced prefixes.
  • The AS announces 5120 IPv4 addresses across 2 prefixes and maintains 2 observed neighbours, a ratio consistent with a small, self-contained educational network rather than a transit or large-scale access provider.

Notable

  • The RDAP registrants for both prefixes match the AS holder, listing "Clovis Unified School District" as the registrant, NOC, tech, and abuse contact.
  • The address inventory consists of two contiguous IPv4 blocks: 204.110.32.0/20 and 204.110.48.0/22, with no IPv6 prefixes in the inventory.

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

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS33667Comcast Cable Communications, LLC80
AS21694Fresno County Office of Education44

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 2 prefixes · 5.12K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS27009
Registry name
CUSD
Registrant
Clovis Unified School District
Abuse contact
JonKinsey@clovisusd.k12.ca.us
Registered
2003-01-13
Last changed
2012-03-20
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS27009
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS27009

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

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 1,783 prefixes, as published 2026-10-17. 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