ans1.cw.net has one IP number , which also has a corresponding reverse pointer. euro-ns1.cw.net and broceliande.iks-jena.de point to the same IP. cw.net, cw.com, vacom.de, diako.de, cwhkt.net and at least 100 other hosts use this as a nameserver. cw.net is a domain controlled by two nameservers at cw.net themselves. They are on different IP networks. Incoming mail for cw.net is handled by two mailservers having a total of 15 IP numbers. Some of them are on the same IP network. ans1.cw.net is hosted on a server in Germany.