Autonomous system
AS11252 ISU-NET-AS
Education ARIN
Summary
Idaho State University
education university legacy
AS11252 (ISU-NET-AS) is the campus network of Idaho State University, the public research university in Pocatello, Idaho. It is a textbook university AS: one legacy /16, a couple of upstreams, and first-party reverse DNS.
What it's used for
Campus networking. RIS observes 9 IPv4 prefixes carrying 67,584 addresses, no IPv6, and two observed neighbours. The address count is almost entirely one block: 134.50.0.0/16 is 65,536 of those addresses, the classic university legacy allocation from the era when a campus took a /16 and numbered every machine on it publicly. The remaining routes are more-specifics carved out of that same /16 plus a handful of /23s, which is the normal way a campus steers particular subnets.
Two neighbours is the correct shape for a university: it buys transit or peers via a regional/research upstream rather than accumulating the hundreds of neighbours a carrier would. Reverse DNS confirms the first-party read directly, with 134.50.0.5 resolving to storm.isu.edu.
Notable
The prefix registrants are worth reading, because they look mixed at a glance and are not. The 134.50 space is registered to Idaho State University, but the 206.207.64.0-ish /23s are registered to the University of Idaho under the handle IDAHO-WESTNET. These are two sibling Idaho public universities, and one announcing space registered to the other is the ordinary shape of shared state higher-education networking. It is not the unrelated-third-party registrant pattern that signals IP leasing.
Interesting
No IPv6 is announced at all. For a research university sitting on a full legacy /16, that is the whole explanation: an institution with 65,536 public addresses it has never exhausted feels none of the address pressure that drove v6 adoption elsewhere.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 24 prefixes · 68.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 24 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11252- Registry name
- ISU-NET-AS
- Registrant
- Idaho State University
- Abuse contact
- domain-tech@mm.isu.edu
- Registered
- 1998-06-01
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 10 with no ROA
- ROAs
- 0 authorising AS11252
- ASPA
- no ASPA record
- IRR
- 90% registered · 9 of 10 announcements
- Route objects
- 10 naming AS11252
Reputation
Classification and threat
Education University, school or national research and education network.
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 2026-10-22. 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