ipweb.ipweb.dk has one IP number. gi.dk, bf.dk, efs.dk, ler.dk, bvb.dk and at least 49 other hosts use this as a nameserver. ipweb.dk is a domain controlled by two nameservers at ipweb.dk themselves. They are on different IP networks. Incoming mail for ipweb.dk is handled by two mailservers at frontedge.net. They are on the same IP network. ipweb.ipweb.dk is hosted on a server in Sweden even though the hostname implies Denmark.