ns1.pctk.org has one IP number , but the reverse is ns.kimsufi.com. ns.fino.fr, ns2.on24.pl, dns2.imq.pl, ns1.nmap.pl, ns2.fun4.pl and at least 100 other hosts point to the same IP. pctk.org use this as a nameserver. pctk.org is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for pctk.org is handled by one mailserver at pctk.org themselves. pctk.org has one IP number. ns1.pctk.org is hosted on a server in France.