dns.idg.com.pl has one IP number , which also has a corresponding reverse pointer. idg.pl, cxo.pl, 20lat.pl, digit.pl, pctips.pl and at least 64 other hosts use this as a nameserver. idg.com.pl is delegated to two nameservers, however two extra nameservers are listed in the zone. Two of them are on the same IP network. Incoming mail for idg.com.pl is handled by one mailserver at idg.com.pl themselves. idg.com.pl has one IP number. dns.idg.com.pl is hosted on a server in Poland.