.CO.ZA is the Commercial domain name extension for South Africa, and is managed by ZACR (ZA Central Registry), who appoints on application, companies like ISP’s, to act as registrars and who have a direct link to the EPP Domain System facilitated by the registry, to register domain names in the .ZA namespace. There are currently more than a million registered .CO.ZA domain names.
All domain names are registered on a year to year basis, meaning you need to renew your domain name every year in order to keep it and to have it active in the registry’s DNS Zone Files (this means to have the domain name published on the internet and to be seen by other DNS servers).
.CO.ZA domain names cannot be paid for a number of years in advance, like the case is with some international domain extensions like .com. As with .com domain names, .CO.ZA domain names also “drop” on a daily basis, meaning the domain name can become available for re-registration by anyone and the first request to register the domain name, will be successful.
Prior to the EPP Domain System, the only method to register a domain name was the Legacy Domain System. The Legacy Domain System still exist and a minor number of domains are still registered using this system, which is much slower and more expensive to use than the EPP Domain System.