AS11206 FSU-AS-1

FSU-AS-1 is Ferris State University in Big Rapids, Michigan — not Florida State, despite the handle. It announces its own legacy 161.57.0.0/16 and a long list of more-specifics carved from it.

What it's used for

Campus networking: academic and administrative departments, residence halls, labs and university services. The RIS view shows 33 announced IPv4 prefixes covering 65,536 addresses, no IPv6, and a single observed BGP neighbour. One upstream and a full /16 is the signature of a university that connects through a state or regional research network rather than buying transit on the open market — a single, well-provisioned path is normal in that model.

Notable

Everything the AS announces is registered to FERRIS: the covering /16 and each of the sampled more-specifics (161.57.240.0/21, 161.57.196.0/22, 161.57.76.0/22, and so on down to individual /24s). Holder and registrant are the same institution, so there is no leased-space or third-party question to resolve.

Interesting

The deaggregation is the interesting part. Announcing the /16 alongside thirty-plus longer prefixes down to /24 is more specific-heavy than a campus strictly needs for reachability. It usually reflects internal structure being pushed into BGP — separate blocks for campuses, colleges or building groups that were originally sized and delegated internally, then advertised individually. The AS number's low value says nothing about the network's age or current shape; what matters is the current holder, and that is unambiguously the university.