Incoming mail for smtp2.cs.kiev.ua is handled by one mailserver at cs.kiev.ua. smtp2.cs.kiev.ua has one IP number , but the reverse is doublebolt.cs.kiev.ua. smtp1.cs.kiev.ua point to the same IP and also shares mailservers. smtp1.ua.net point to the same IP. vol.kiev.ua, zenzor.cs.kiev.ua and zurbagan.cs.kiev.ua use this as a mailserver. localhost.cs.kiev.ua share mailservers with this domain. cs.kiev.ua is delegated to five nameservers, however one extra nameserver is listed in the zone. All nameservers are having a total of seven IP numbers. Some of them are on the same IP network. Incoming mail for cs.kiev.ua is handled by three mailservers. Two mailservers have the same IP number. Some of them are on the same IP network. smtp2.cs.kiev.ua is hosted on a server in Ukraine.