Autonomous system
AS11607 SD-STATE-UNIVERSITY - South Dakota State University
Education ARIN
Summary
South Dakota State University
education university research legacy
SD-STATE-UNIVERSITY is South Dakota State University, the state's largest public university, based in Brookings. It is a single-campus higher-education network.
What it's used for
Campus networking for students, faculty, administration and research computing. The AS announces exactly one prefix — 137.216.0.0/16, 65,536 addresses, no IPv6 — registered to SDSTATE (org: South Dakota State University). One contiguous legacy /16, announced whole, held by the institution that uses it: there is no ambiguity to resolve here about who operates the space or what it carries.
Notable
Two observed BGP neighbours. For a network with 65k addresses that is a small number, and it is the useful signal: a university edge takes transit from one or two providers (regionally, that usually means a state research-and-education network plus a commercial upstream) and does not peer widely. A wholesale carrier moving comparable address volume would show neighbours in the hundreds. So despite the size, this is an eyeball-and-servers campus, not infrastructure.
The absence of any announced IPv6 is worth flagging for an R&E network of this size — universities are usually among the earlier adopters, and RIS sees none here.
Interesting
Easy to confuse with AS11602, the South Dakota School of Mines & Technology in Rapid City. Two separate South Dakota institutions, two separate ASes, five numbers apart. The similarity of the names is a good reminder that an AS handle identifies a legal entity, not a category.
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 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11607- Registry name
- SD-STATE-UNIVERSITY
- Registrant
- South Dakota State University
- Abuse contact
- casey.sampson@sdstate.edu
- Registered
- 1998-10-19
- Last changed
- 2019-12-11
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 2 authorising AS11607
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 2 naming AS11607
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: 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