mail.bulldog.hu has one IP number , which is the same as for bulldog.hu, but the reverse is tux.hu. tux.hu, oske.hu, doza.hu, hubay.hu, no-ip.hu and at least 100 other hosts point to the same IP. bulldog.hu use this as a mailserver. bulldog.hu is a domain controlled by three nameservers having a total of four IP numbers. All of them are on different IP networks. Incoming mail for bulldog.hu is handled by one mailserver at bulldog.hu themselves. mail.bulldog.hu is hosted on a server in Hungary.