.The Canadian Internet Registration Authority (CIRA) is a not for profit Canadian corporation that is responsible for operating the dot-ca Internet country code Top Level Domain (ccTLD) as a key public resource for all Canadians in an innovative, open, and efficient manner. CIRA became the official dot-ca registry on December 1, 2000. CIRA certified registrars began accepting new dot-ca registrations on November 8, 2000..