We pick j.root-servers.net, one of the 13 root servers (1), and ask it about searchmasters.net.nz and learn that nz is delegated to seven name servers (2), so we ask ns2.dns.net.nz where we learn that searchmasters.net.nz is delegated to two name servers, including ns2.searchmasters.net.nz (3), so we ask that one and get the following answer:
The two name servers ns1 and ns2.searchmasters.net.nz together
There are seven domains that use name server group 1.
All of those point only to the IP number 50.28.34.97.
All of them use only the IPv4 number 50.28.34.97. Worth noting is that seven of the domains that only use the IPv4 number 50.28.34.97 use name server group 1.
The primary name server ns1.searchmasters.net.nz only
All of the seven domains that use the primary name server ns1.searchmasters.net.nz use name server group 1. Worth noting is that all of the domains that use name server group 1 use the primary name server ns1.searchmasters.net.nz.
The IPv4 number 50.28.34.97 only
Three of the eight domains that only use the IPv4 number 50.28.34.97 are under the tld "nz".
