AS11745 USNH

USNH is the University System of New Hampshire, the public higher-education system that includes the University of New Hampshire in Durham, Plymouth State and Keene State. This is a campus and research network.

What it's used for

Academic, residential-campus and administrative connectivity across the system's institutions. RIS sees 2 IPv4 prefixes, 73,728 addresses, 1 IPv6 prefix, and 6 observed neighbours.

The interesting number is the address count against the prefix count. 132.177.0.0/16 is a full classful-era /16, announced whole, and it accounts for almost the entire footprint. Universities that got onto the internet early hold blocks that a company of comparable headcount could never obtain today, and they tend to announce them intact rather than carving them up — there is no traffic-engineering reason to deaggregate when you have exactly one network to reach. The /16 registers to the University System of New Hampshire, and the sampled PTR mercury.unh.edu confirms first-party use.

Notable

The second prefix, 64.72.0.0/19, registers not to USNH but to the Community College System of New Hampshire. That is a separate legal entity, and it is precisely the kind of registrant mismatch that can look like leased space at a glance. It is not. It is a state higher-education system announcing a sibling state institution's block — a shared-infrastructure arrangement between two public systems in the same state, which is the ordinary way research and education networking is organised regionally.

Interesting

IPv6 is present as 2606:4100::/32, so USNH is dual-stacked, which puts it ahead of a number of comparably sized public universities that still announce v4 only.