isdn.ws.net has one IP number , which is the same as for ws.net. pp1.vg, ro.net, ws.net, borg.vg, demon.vg and at least 100 other hosts point to the same IP. fw.isdn.ws.net are subdomains to this hostname. ws.net is delegated to four nameservers, however all four delegated nameservers are missing in the zone. All nameservers are at dnsnameserver.org. Some of them are on the same IP network. isdn.ws.net is hosted on a server in United States.