PingYour.comApril 2, 2021April 14, 2021 .co.za is the most popular country code second level domain extension in South Africa. The central registry for the .co.za domain name is ZADNA. .za domain names became available for registration in 1990. Anyone can register a .co.za domain name. Related Entries .co.uk domain name .ca domain name .de domain name .eu domain name .it domain name