mail.pwn.it has one IP number , which is the same as for pwn.it, but the reverse is dd6914.kasserver.com. pwn.it, eadi.de, wi01.net, i.pwn.it, mqdit.com and at least 88 other hosts point to the same IP. pwn.it use this as a mailserver. pwn.it is a domain controlled by two nameservers at kasserver.com. They are on the same IP network. Incoming mail for pwn.it is handled by one mailserver at pwn.it themselves. mail.pwn.it is hosted on a server in Germany even though the hostname implies Italy.