asn.dev

Autonomous system

AS23122 DSU - Dakota State University

Unclassified ARIN

IPv4 addresses 65.54K 1 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

Dakota State University

United States of America · AI-generated

education university network

The AS handle DSU is operated by Dakota State University.

What it's used for

  • The address space carries the university's internal network, identified by the netname DSUNET and registrant Dakota State University.
  • The AS announces 65536 IPv4 addresses within a single /16 prefix (138.247.0.0/16) and maintains 2 observed neighbours, a ratio consistent with an institutional access network rather than a transit provider.

Notable

  • The RDAP registrant Dakota State University aligns directly with the AS holder and the netname DSUNET.
  • The address inventory consists of a single contiguous /16 block, typical for a large educational institution managing its own internal addressing.

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
AS14263South Dakota State Government58
AS33189South Dakota Board of Regents10

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, 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 1 prefixes · 65.54K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23122
Registry name
DSU
Registrant
Dakota State University
Abuse contact
abuse@dsu.edu
Registered
2002-01-24
Last changed
2019-06-14
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
2 authorising AS23122
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS23122

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: 454 networks and 1,854 prefixes, as published 2026-11-06. 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