Master: The Master field gives the name of the server that acts as master server for the Zone.

Hostmaster: The Hostmaster field is properly formatted by giving the E-mail address of the person responsible for zone with the "@" symbol replaced with a "." So Instead of "hostmaster@example.com." you have "hostmaster.example.com.". A default Hostmaster field can be set in the Preferences menu.

Serial Number: The serial number is a ten digit number, the year, month, day, and a 2 digit daily revision number. (Actually, it’s any integer between 0 and about 4 billion, but the preceding is the standard convention.) To create a unique serial number, QuickDNS Manager adds 1 to the daily revision number every time the zone is saved.

Refresh: Refresh is the period in seconds that determines how often slave servers will check with the master server to determine if their zone files are up to date. This is done by checking the serial number. The default value for this field is 28800, once every 8 hours.

Retry: This determines the period a slave server will wait before retrying to contact the master zone in the event that an earlier contact attempt is unsuccessful. The default value is 7200 seconds, once every 2 hours.

Expire: The Expire field determines how long a slave server will wait since its last successful contact to a master server before it will stops returning an authoritative response for the zone. The default period is 604800 seconds, 1 week.

Time To Live: This TTL applies to the SOA record. It represents the maximum time in seconds any outside DNS server should cache this data.

Default TTL: The Minimum serves as the default time-to-live for all records without an explicit TTL value. The default value is 86400 seconds, 24 hours.

Negative Caching: Also specific to BIND, Negative Caching is the amount of time other resolvers should cache a negative response for records.