; /etc/bind/zones/example.org
$TTL 3h;
@	IN	SOA	ns.example.org. example.org. (
	1 ; serial
	3h; refresh timeout
	1h; retry timeout
	1w; expire timeout
	1h; negative caching TTL
)
@	IN	NS		ns.example.org.  ; name server
@	IN	MX	10	example.org.     ; mail exchange server

ns	IN	A		1.2.3.4
@	IN	A		1.2.3.4

ns	IN	AAAA	ef::1
@	IN	AAAA	ef::1

www	IN	CNAME	example.org.