.nz registrars, requirements and history
.nz is a country-specific top level domain assigned to New Zealand. It was introduced in 1987 and the first organization that administered the domain was the University of Waikato. In 1995, when internet use started growing in New Zealand, administration of the .nz top level domain was handed over to InternetNZ, a non-profit group that promotes Internet development in the country.
Domain registrations are currently handled by third party registrars authorized by InternetNZ. Currently, it is not possible to register domains directly at the second level. Rather, registration must be made under one of the approved sub-levels. The most commonly used sub-levels are .com.nz, .org.nz and .net.nz. New Zealand is has some rather unique sub-levels which can be used by anyone interested, such as .geek.nz, intended to be used by people skilled in technology, .kiwi.nz, for entities that closely associate with New Zealand (Kiwi is a colloquial term for a New Zealander) and .maori.nz for the country's Maori people.
Some other second level categories are moderated and only approved entities can register a domain under them. Examples include .health.nz and .govt.nz, which are reserved for health and government organizations in New Zealand. Registration under the non-moderated categories is available to anyone who wishes to obtain a .nz domain. While .nz domains are mostly used by entities having a connection to New Zealand, there are no geographical or citizenship requirements for registering a .nz domain. Therefore, registrants can be located anywhere in the world without having to show a connection to New Zealand.