AS11745 — USNH
Network type: education
AS11745 announces 2 IPv4 prefixes covering 73,728 addresses and 1 IPv6 prefixes.
About this network
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.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 64.72.0.0/19
- 132.177.0.0/16
- 2606:4100::/32
Upstream networks
- AS174 Cogent Communications, LLC
- AS11164 Internet2
- AS11537 Internet2
- AS27405 University System of New Hampshire
Downstream networks
- AS19713 State of New Hampshire
- AS394961 Saint Anselm College
- AS27405 University System of New Hampshire
Adjacent networks
awaiting query
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