$ORIGIN example.com.     ; designates the start of this zone file in the namespace
$TTL 3600                ; default expiration time (in seconds) of all RRs without their own TTL value
example.com.    IN  SOA   ns.example.com. username.example.com. ( 2020091025 ; A comment
                                                                  7200 ; Comment
                                                                 ; empty line on purpose
                                                                  3600
                                                                  1209600
                                                                  3600 )
example.com.    IN  NS    ns                    ; ns.example.com is a nameserver for example.com
example.com.    IN  NS    ns.somewhere.example. ; ns.somewhere.example is a backup nameserver for example.com
example.com.    IN  MX    10 mail.example.com.  ; mail.example.com is the mailserver for example.com
@               IN  MX    20 mail2.example.com. ; equivalent to above line, "@" represents zone origin
@               IN  MX    50 mail3              ; equivalent to above line, but using a relative host name
b.example.com.  IN  A     192.0.2.1             ; IPv4 address for example.com
                IN  AAAA  2001:db8:10::1        ; IPv6 address for example.com
ns              IN  A     192.0.2.2             ; IPv4 address for ns.example.com
                IN  AAAA  2001:db8:10::2        ; IPv6 address for ns.example.com
www             IN  CNAME example.com.          ; www.example.com is an alias for example.com
wwwtest         IN  CNAME www                   ; wwwtest.example.com is another alias for www.example.com
mail            IN  A     192.0.2.3             ; IPv4 address for mail.example.com
mail2           IN  A     192.0.2.4             ; IPv4 address for mail2.example.com
mail3           IN  A     192.0.2.5             ; IPv4 address for mail3.example.com

mail3           IN  TXT   "This is ; quoted"    ; A quoted comment separator
$ORIGIN example.de.
www2            IN  A     192.0.2.7             ; IPv4 address for www2.example.de

