asn.dev

Autonomous system

AS53355 CUW-1 - Concordia University Wisconsin

Unclassified ARIN

IPv4 addresses 1.28K 5 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Concordia University Wisconsin

United States of America · AI-generated

education university wisconsin

CUW-1 is operated by Concordia University Wisconsin, a private Lutheran university in Mequon, Wisconsin.

What it's used for

  • The address space carries university infrastructure, with netnames CUAA-1 and CUW-1 registered to Concordia University Wisconsin, alongside WISCNET-BLOCK1 blocks registered to WiscNet.
  • The AS announces 1280 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small, self-contained campus network rather than a transit or access provider.
  • Traffic from this AS consists of campus users, faculty, staff, and students accessing the internet and university services, typical of a higher education institution.

Notable

  • Registrants are mixed: 38.103.94.0/24 is registered to Cogent Communications, LLC, while the other four prefixes are registered to Concordia University Wisconsin or WiscNet, suggesting a combination of owned and leased or historically allocated space.
  • The inventory includes a Cogent-registered block, which may reflect a lease or historical allocation, contrasting with the university-owned blocks.
  • The address inventory is small and fragmented, with five distinct IPv4 prefixes and one IPv6 prefix, consistent with a single-campus university network.

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 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2381WiscNet233
AS18683Midwest Fiber Networks, LLC63

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-08, 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 5 prefixes · 1.28K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS53355
Registry name
CUW-1
Registrant
Concordia University Wisconsin
Abuse contact
mark.newhouse@cuw.edu
Registered
2009-12-16
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
33% valid · 2 valid, 4 with no ROA
ROAs
2 authorising AS53355
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
8 naming AS53355

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: 455 networks and 1,854 prefixes, as published 2026-11-09. 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