nn.uninett.no has one IP number , which also has a corresponding reverse pointer. uio.no, mork.no, ndgf.org, nunoc.net, nihlen.org and at least 100 other hosts use this as a nameserver. uninett.no is a domain controlled by five nameservers. Two of them are on the same IP network. Incoming mail for uninett.no is handled by two mailservers. Two mailservers have the same IP number. uninett.no has one IP number. nn.uninett.no is hosted on a server in Norway.