ns1.omnitel.net has one IP number , which also has a corresponding reverse pointer. ot.lt, sb.lt, zas.lt, rrt.lt, prk.lt and at least 100 other hosts use this as a nameserver. omnitel.net is a domain controlled by two nameservers at omnitel.net themselves. They are on different IP networks. Incoming mail for omnitel.net is handled by two mailservers also at omnitel.net. They are on the same IP network. ns1.omnitel.net is hosted on a server in Lithuania.