AS11602 SDSMT-AS

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](https://asn.ipinfo.app/AS11607), South Dakota State University in Brookings — a different institution holding an adjacent AS number in the same sweep.