asn.dev

Autonomous system

AS33187 SHSU

Unclassified ARIN

IPv4 addresses 65.54K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Sam Houston State University

United States of America · AI-generated

education university research

SHSU is the autonomous system for Sam Houston State University, a public research institution in Huntsville,

What it's used for

  • The space carries university infrastructure, evidenced by the netname SAM-HOUSTON-NET and registrant Sam Houston State University.
  • The AS announces 65536 IPv4 addresses and 1 IPv6 prefix, with only 3 observed neighbours, indicating an internal campus network rather than a transit provider.

Notable

  • The registrant Sam Houston State University matches the AS handle SHSU and the announced prefix 158.135.0.0/16.
  • The address inventory consists of a single /16 block, representing a standard allocation for a large educational institution.

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

3 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS22645LEARN91
AS16905LEARN7
AS13359LEARN1

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 1 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS33187
Registry name
SHSU
Registrant
Sam Houston State University
Abuse contact
gaj003@shsu.edu
Registered
2004-10-20
Last changed
2021-06-15
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS33187
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS33187

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 1,778 prefixes, as published 2026-10-20. 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