$ORIGIN example.com. ; 'default' domain as FQDN for this zone
$TTL 86400 ; default time-to-live for this zone

example.com.   IN  SOA     ns.example.com. noc.dns.icann.org. (
        2020080302  ;Serial
        7200        ;Refresh
        3600        ;Retry
        1209600     ;Expire
        3600        ;Negative response caching TTL
)

; The nameserver that are authoritative for this zone.
                                NS      example.com.

; these A records below are equivalent
example.com.    A       192.0.2.1
@                               A       192.0.2.1
                                A       192.0.2.1

@                               AAAA 2001:db8::3

; A CNAME redirect from www.exmaple.com to example.com
www                             CNAME   example.com.

mail                    MX      10      example.com.
