ns3.netikka.fi has one IP number , which also has a corresponding reverse pointer. rmk.fi, nbf.fi, syo.fi, sjk.fi, vlp.fi and at least 100 other hosts use this as a nameserver. netikka.fi is a domain controlled by three nameservers at netikka.fi themselves. All of them are on the same IP network. Incoming mail for netikka.fi is handled by two mailservers at netikka.net. They are on the same IP network. netikka.fi has one IP number. ns3.netikka.fi is hosted on a server in Finland.