$ORIGIN given.zone.
$TTL 3600
@               IN SOA ns.given.zone.  hostmaster.given.zone. 1 600 300 604800 3600
                IN NS  ns.given.zone.

ns.given.zone. IN A 127.0.0.1
; this should be ignored as it matches an earlier passthru entry.
example.com CNAME .
; this should be ignored as it matches an earlier wildcard passthru entry.
www.example.com CNAME .
