ns2.vsv.pl has one IP number , which is the same as for vsv.pl, via cname to ex11.exmasters.com , which also has a corresponding reverse pointer. vsv.pl, baso.sk, cx9.net, 4fat.com, bbye.com and at least 100 other hosts point to the same IP. vsv.pl is a domain controlled by two nameservers at exmasters.com. They are on different IP networks. Incoming mail for vsv.pl is handled by one mailserver also at exmasters.com. ns2.vsv.pl is hosted on a server in Czech Republic even though the hostname implies Poland.