ns-secondary.funet.fi has one IP number , which also has a corresponding reverse pointer. cop.fi, uta.fi, sgo.fi, uku.fi, fmi.fi and at least 100 other hosts use this as a nameserver. funet.fi is a domain controlled by two nameservers at funet.fi themselves. They are on the same IP network. Incoming mail for funet.fi is handled by four mailservers at csc.fi. All of them are on the same IP network. ns-secondary.funet.fi is hosted on a server in Finland.