Registration in the Tanzania country domain, TZ, is done via email using a simple ASCII form. As the form is processed by scripts, please do not modify, reformat, ... it in any way.
Note that two problems are the most common causes for rejection of applications.
Per RFC 2182, at least one secondary nameserver must be on a different international backbone than the primary server.
Registrations must be from organizations with a real presence in the country and with a demonstrable intent to use the domain name on a regular basis on the internet. I.e. vanity, placemark, ... name registration is not appropriate. For trademark registration, see the trademark office.