Tanzania Communications Regulatory Authority (TCRA) published on the Daily News on 1st June, 2016 all business entities registered in the country should have and use dot(.) tz domain names.
The notice stated that this requirement is in order to comply with the regulatory requirements and to contribute to the national revenue. However, the notice does not give a deadline to do so or limit the use of other domain endings. Therefore we assume that if you own a .com, .net, or any other domain ending then you are required to register a respective .tz domain name.