Incoming mail for z138.zone.ee is handled by one mailserver at zone.ee. z138.zone.ee has one IP number , which also has a corresponding reverse pointer. mob.ee, ehl.ee, hpk.ee, esb.ee, crew.ee and at least 76 other hosts point to the same IP. 1k.ee, we.ee, big.ee, all.ee, foo.ee and at least 100 other hosts share mailservers with this domain. zone.ee is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for zone.ee is handled by two mailservers also at zone.ee. They are on different IP networks. zone.ee has one IP number. z138.zone.ee is hosted on a server in Estonia.