The form that adds new DNS Zone ask for SOA which should be called FQDN ( fully qualified domain name ). That's because The SOA <origin> value suppose to be the domain of the server that hold the master zone. And not the new domain name. from RFC 1033 Code: SOA (Start Of Authority) <name> [<ttl>] [<class>] SOA <origin> <person> ( <serial> <refresh> <retry> <expire> <minimum> ) The Start Of Authority record designates the start of a zone. The zone ends at the next SOA record. <name> is the name of the zone. <origin> is the name of the host on which the master zone file resides. <person> is a mailbox for the person responsible for the zone. It is formatted like a mailing address but the at-sign that normally separates the user from the host name is replaced with a dot.