ns2.freeuk.net has one IP number , but the reverse is ns2.clara.net. ns2.clara.net point to the same IP. freeuk.net is a domain controlled by three nameservers at clara.net. All of them are on different IP networks. Incoming mail for freeuk.net is handled by one mailserver having a total of two IP numbers. They are on the same IP network. freeuk.net has one IP number. ns2.freeuk.net is hosted on a server in France.