AS10265 SENECA-ASN-01

SENECA-ASN-01 is Seneca College of Applied Arts and Technology — now branded Seneca Polytechnic — a large public post-secondary institution in the Greater Toronto Area with campuses across Toronto, North York, Markham and Newmarket. AS10265 is the campus network.

What it's used for

Everything a campus does with IP: student and staff wireless, lab and classroom machines, residence networks, administrative systems, and the college's public-facing web and mail. The AS announces 3 IPv4 prefixes totalling 16,384 addresses and no IPv6 — a 142.204.0.0/18 plus its own two constituent /19s, 142.204.0.0/19 and 142.204.32.0/19. Announcing a /18 alongside the two halves that make it up is ordinary campus traffic engineering: the covering route keeps reachability if one path fails, while the /19s let each half be steered toward a different upstream.

Notable

This is an education network, and the routing corroborates the name rather than merely repeating it. Two observed BGP neighbours against 16,384 addresses is exactly the shape of a Canadian institution connected to a provincial research-and-education network with a commodity-internet backup: enough for redundancy, far too few for any wholesale role. The address count is likewise right for a campus of Seneca's size — tens of thousands of addresses, none of them subscriber pools.

Nothing here is hosting or transit. Geolocate the space to the Toronto area, and expect students, staff and campus infrastructure behind any address in it.