CIRA is our country's Internet registration authority and manages the .ca domains as well as other technical bits and pieces for Canadians.
Unfortunately, the website is beyond painful to use, and finding information on it is made more difficult by bad links and inconsistency.
Their 404 page suggests "If you still can't find what you're looking for, please stay a while and look around".
Unfortunately, given the above, that's just not good advice.