We pick i.root-servers.net, one of the 13 root servers (1), and ask it about samosia.pl and learn that pl is delegated to eight name servers (2), so we ask i-dns.pl where we learn that samosia.pl is delegated to two name servers, including ns1.go2.pl (3), so we ask that one and get the following answer:
There are about ninety domains that use the name server ns2.go2.pl.
All of those use the two name servers ns1 and ns2.go2.pl together, hereafter referred to as "name server group 1", (example: demoty.pl, songer.pl and jabber.pl ).
There are about fifty domains that only use the mail server poczta.firma.o2.pl.
Three quarter of those use name server group 1 (example: kaprysy.pl, mediaone.pl and motosos.pl ). Worth noting is that a third of the domains that use name server group 1 use only the mail server poczta.firma.o2.pl.
Eight of them point only to the IP number 193.17.41.124. Worth noting is that eight of the host names that point only to the IP number 193.17.41.124 use only the mail server poczta.firma.o2.pl.
The two name servers ns1 and ns2.go2.pl together
There are about ninety domains that use name server group 1.
There are about fourty host names that point only to the IP number 193.17.41.124.
Eight of those use name server group 1. Worth noting is that eight of the domains that use name server group 1 point only to the IP number 193.17.41.124.