ns3.rixtel.com has one IP number , which also has a corresponding reverse pointer. ra.lv, a4.lv, loc.lv, lmv.lv, uhl.lv and at least 49 other hosts use this as a nameserver. rixtel.com is a domain controlled by two nameservers at rixtel.com themselves. They are on different IP networks. Incoming mail for rixtel.com is handled by two mailservers also at rixtel.com. They are on the same IP network. rixtel.com has one IP number. ns3.rixtel.com is hosted on a server in Latvia.