*.mp321.cz has one IP number , which is the same as for mp321.cz, via cname , but the reverse is www14.pipni.cz. klp.cz, rvk.cz, ehf.cz, sdg.cz, tkc.cz and at least 95 other hosts point to the same IP. mp321.cz is a domain controlled by three nameservers at pipni.cz. Two of them are on the same IP network. Incoming mail for mp321.cz is handled by two mailservers on different IP networks. *.mp321.cz is hosted on a server in Czech Republic.