Autonomous system
AS11602 SDSMT-AS - South Dakota School of Mines & Technology
Education ARIN Educational/Research
Summary
South Dakota School of Mines & Technology
education university research legacy
SDSMT-AS belongs to the South Dakota School of Mines & Technology, the public science-and-engineering university in Rapid City, South Dakota. It is a straightforward single-campus university network.
What it's used for
Campus connectivity: student and staff hosts, university-run servers, labs and research computing. Every announced prefix sits inside 151.159.0.0/16, all of it registered to SDSMTNET (org: South Dakota School of Mines & Technology), and the sampled reverse DNS resolves to admission-color-svr.sdsmt.edu — a first-party host in the institution's own domain. Registrant, holder and rDNS all agree, which is what a real operator on its own space looks like.
Notable
RIS sees six announced v4 prefixes carrying 60,416 addresses and no IPv6, against just two observed BGP neighbours. The neighbour count is the informative number here. Two upstreams for a network of that size is a customer edge, not a carrier — the university buys transit (in this region typically through the state research/education network) rather than peering broadly. The six prefixes are not a scattered inventory either: they are 151.159.0.0/17, /18, two /20s, a /21 and a /22, i.e. de-aggregated slices of one contiguous legacy /16. That pattern usually reflects multi-homing or internal traffic engineering across the campus block rather than any acquisition history.
Interesting
Not to be confused with AS11607, South Dakota State University in Brookings — a different institution holding an adjacent AS number in the same sweep.
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 6 prefixes · 60.42K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11602- Registry name
- SDSMT-AS
- Registrant
- South Dakota School of Mines & Technology
- Abuse contact
- Steve.Bauer@sdsmt.edu
- Registered
- 1998-10-19
- Last changed
- 2012-03-02
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- SDSMT
- Also known as
- SDSMT
- Network type
- Educational/Research
- Scope
- Regional
- Traffic ratio
- Not Disclosed
- Peering policy
- Restrictive
- IRR as-set
ARIN::AS11602:AS-ALL- Website
- https://www.sdsmt.edu
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 7 authorising AS11602
- ASPA
- 2 declared providers
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 7 naming AS11602
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