dns2.myinet.pl has one IP number , which also has a corresponding reverse pointer. dns4.inet.pl and ftp.myinet.pl point to the same IP. bic.pl, iris.pl, qnap.eu, ebut.pl, wset.pl and at least 100 other hosts use this as a nameserver. myinet.pl is a domain controlled by two nameservers at myinet.pl themselves. They are on the same IP network. Incoming mail for myinet.pl is handled by one mailserver also at myinet.pl. myinet.pl has one IP number , which also has a corresponding reverse pointer. dns2.myinet.pl is hosted on a server in Poland.