We pick g.root-servers.net, one of the 13 root servers (1), and ask it about b.st and learn that st is delegated to four name servers (2), so we ask dns-au.st where we learn that b.st is delegated to two name servers, including ns1.nic.st (3), so we ask that one and get the following answer:
B.st is a domain controlled by two domain name servers at nic.st. Both are on different IP networks. B.st has one IP number (193.25.126.82), but the reverse is ?.
B.st is hosted on a server in Sweden even though the hostname implies Sao Tome And Principe.
The name server ns2.nic.st
All of the more than hundred domains that use the name server ns2.nic.st use the two name servers ns1 and ns2.nic.st together, hereafter referred to as "name server group 1", (example: bpf.st, albert.st and led.st ).
The two name servers ns1 and ns2.nic.st together
There are more than hundred domains that use name server group 1.