ns1.otaverkko.fi has one IP number , which also has a corresponding reverse pointer. sec.fi, wlc.fi, ytn.fi, oibs.fi, hoas.fi and at least 75 other hosts use this as a nameserver. otaverkko.fi is a domain controlled by two nameservers at otaverkko.fi themselves. They are on the same IP network. Incoming mail for otaverkko.fi is handled by two mailservers also at otaverkko.fi. They are on the same IP network. ns1.otaverkko.fi is hosted on a server in Finland.