We pick h.root-servers.net, one of the 13 root servers (1), and ask it about bsd.nu and learn that nu is delegated to five name servers (2), so we ask ns.nic.nu where we learn that bsd.nu is delegated to three name servers, including ns2.netbsd.se (3), so we ask that one and get the following answer:
Bsd.nu is a domain controlled by three domain name servers at netbsd.se and dream.mx having a total of five IP numbers. Two of them are on the same IP network. Incoming mail for bsd.nu is handled by seven mail servers at googlemail.com and google.com having a total of 56 IP numbers. There are 31 duplicated IP numbers. Some of them are on the same IP network. Bsd.nu has one IP number (77.53.34.130), but the reverse is ?.
Six of the nine host names that point to the IP number 77.53.34.130 point only to that ip number.
The three name servers dns02.dream.mx, ns1.netbsd.se and ns2.netbsd.se together
Three of the five domains that use name server group 1 point to IP group 1. Worth noting is that all of the host names that point to IP group 1 use name server group 1.
