asn.dev

Autonomous system

AS25691 CTSTATEU

Unclassified ARIN

IPv4 addresses 69.63K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Connecticut State Colleges & Universities

United States of America · AI-generated

education business us

CTSTATEU is the autonomous system for Connecticut State Colleges & Universities.

What it's used for

  • The address space carries institutional traffic for the Connecticut State University System, as indicated by the netnames COMMNET2 and CTSTATEU.
  • The AS announces 69632 IPv4 addresses across 2 prefixes while maintaining only 1 observed neighbour, a ratio that implies an internal corporate or educational estate rather than a transit or access provider.

Notable

  • Registrants align with the announcer, listing "Connecticut State Colleges & Universities, Regional Community-Technical College System" for 155.43.0.0/16 and "Connecticut State Colleges & Universities, Connecticut State University System" for 149.152.0.0/20.
  • The inventory consists of two distinct IPv4 blocks: a /16 and a /20, with no IPv6 prefixes currently announced.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS22742Connecticut Education Network124

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, 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 · 69.63K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS25691
Registry name
CTSTATEU
Registrant
Connecticut State Colleges & Universities, Connecticut State University System
Abuse contact
abuse@ct.edu
Registered
2002-04-19
Last changed
2022-08-12
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS25691
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS25691

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 1,779 prefixes, as published 2026-10-21. 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