AS11252 — ISU-NET-AS
Network type: education
AS11252 announces 3 IPv4 prefixes covering 68,096 addresses and 0 IPv6 prefixes.
About this network
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.
Announced prefixes
- 134.50.0.0/16
- 206.207.64.0/21
- 206.207.72.0/23
Upstream networks
Adjacent networks
awaiting query
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