uporn.co.uk is a domain controlled by two nameservers at fastpark.net. They are on different IP networks. uporn.co.uk has one IP record. ida.se, i3f.fr, fey.se, e28.org, fmcg.se and at least 56 other hosts share nameservers with this domain. www.uporn.co.uk are subdomains to this hostname. co.uk is a domain controlled by eleven nameservers at nic.uk. All of them are on different IP networks.