Master File

A master file is a text file consisting or directives and resource records in the presentation format. Comments start with a semi-colon (;) and blank lines are allowed. The file is typically used to define a DNS Zone.

Example

; Set zone name and default timeout
$ORIGIN example.org.
$TTL 3600

@    SOA   ns1 username.example.org. ( 2007120710 1 2 4 1 )
     NS    ns1
     NS    ns2
     MX    10 mail

; Host addresses
ns1  A     192.0.2.1
ns2  A     192.0.2.2
mail A     192.0.2.3