Is the entire utcc.utoronto.ca return 403 or just utcc.utoronto.ca/~cks? Maybe it's no longer common knowledge, but the ~string part typically means it's hosted in a way so individual unix users can somewhat control their own environments, sometimes with .htaccess files or other things, and adjust the responses from the web-servers somewhat.

Anyways, the point being that it might not be the university doing it, but an individual user. I guess the former would be kind of shitty, but the latter is maybe ok as individuals should be able to chose freely?

FWIW, both the domain at large + this specific URL seems to work fine for me in Spain.