AS11318 GU

GU is Georgetown University, the private research university in Washington, D.C. The handle is two letters and could name almost anything; the registry settles it — every prefix the AS originates is registered to Georgetown University under the netname GEORGETOWN-NET.

What it's used for

A campus network. RIS sees 3 IPv4 prefixes, 65,536 addresses, 1 IPv6 prefix and 4 observed neighbours. The IPv4 side is the university's legacy 141.161.0.0/16 plus its two halves, 141.161.0.0/17 and 141.161.128.0/17, announced as more-specifics alongside the covering aggregate. Splitting an aggregate in half and announcing both halves is standard practice for a multi-homed site: it lets the operator pull traffic for each half toward a different upstream, and it keeps a longer prefix in the global table as a hijack backstop.

IPv6 is present and properly sized: 2620:107::/40, ARIN direct-assignment space. A /40 is a campus allocation, not a token block — it gives Georgetown room to hand a /48 or /64 to every building, subnet and residence hall, which is the shape of a network that actually deployed v6 rather than one that reserved it.

Notable

Four neighbours against a full /16 is the number that settles the classification. A network with 65,536 addresses and only four peers is consuming connectivity, not selling it. For a US research university those four typically comprise commodity transit plus a regional research-and-education network path onward to Internet2 — the split that lets bulk research data ride the R&E fabric while ordinary campus traffic goes to the commercial internet. The space carries what a residential-and-research campus carries: faculty and staff, student residence halls, lab and HPC systems, the medical centre estate, and the university's public web presence.