$TTL 1D
$ORIGIN us.example.com.
@	IN	SOA 	us.example.com. root.us.example.com. (
			2001030301
			2H
			1H
			1W
			1D )
	IN	NS	ns1.us.example.com.
ns1	IN	A 	192.168.1.10
mail  IN	MX 10	www.us.example.com.	
www IN	A	192.168.1.11	
A    $INCLUDE	Kus.example.com.+003+51297.key