The .CA extension is a country code top-level domain for Canada. The domain is operated by the Canadian Internet Registration Authority. The .CA domain has been introduced in 1987 by Jon Postel, operator of IANA. Since then there are more than 3 million .ca domains registered.
Requirements for .CA domain registrations
To register a .CA domain you must meet the Canadian Presence Requirements. In other words, you or your business must be based mainly in Canada in order to register a .ca domain. If you meed the requirements for a .CA domain you can register one here.