Domainz limited was the original . nz registry operator and is now an icann accredited domain name registrar and web host. iana delegated the . nz namespace to john houlker on 19 january 1987, and the university of waikato issued . nz domain names and maintained the . nz registry during the early part of internet availability in new zealand. during 1996, as internet use was flourishing in new zealand, and operation of the .