AS10561 BRANDEIS

The campus ASN of Brandeis University, the private research university in Waltham, Massachusetts. The handle BRANDEIS matches the holder exactly.

What it's used for

A single-campus research university network. RIS sees 2 announced IPv4 prefixes carrying 65,536 addresses, no IPv6, and three observed neighbours. The whole footprint is 129.64.0.0/16, a full legacy Class B, with 129.64.249.0/24 announced as a more specific out of it.

Three neighbours against a /16 is a stub with redundancy, not a carrier. A university this size in the Boston area would typically reach the internet through a research-and-education network alongside commercial transit, which is exactly the small handful of upstreams the neighbour count reflects. There is no sign of any wholesale role.

Notable

The 65,536 addresses are a historical artefact, not a measure of scale. 129.64.0.0/16 was allocated when a university could be handed an entire Class B on request, and Brandeis has held it since. Its actual campus population is a fraction of that address count, and, as at every university, most of what runs on the network today sits behind NAT or in cloud services that are not in this space at all.

The lone /24 announced alongside the /16 is the routine pattern for splitting one subnet off across a different link, or for pinning a specific block against hijack. It carries no extra addresses of its own; it is a slice of the /16 advertised twice at different lengths.