We pick a.root-servers.net, one of the 13 root servers (1), and ask it about vw.com.pl and learn that pl is delegated to eight name servers (2), so we ask a-dns.pl where we learn that vw.com.pl is delegated to two name servers, including dns2.home.pl (3), so we ask that one and get the following answer:
Vw.com.pl is a domain controlled by three domain name servers at home.pl having a total of ten IP numbers. Some of them are on the same IP network. Incoming mail for vw.com.pl is handled by one mail server at vw.com.pl themselves. Vw.com.pl has one IP number (79.96.135.12), but the reverse is v085102.home.net.pl.