$ORIGIN .
$TTL 86400	; 1 day
site1.example.com	IN SOA	ns1.example.com. hostmaster.example.com. (
				2002022402 ; serial
				10800      ; refresh (3 hours)
				15         ; retry (15 seconds)
				604800     ; expire (1 week)
				10800      ; minimum (3 hours)
				)
$TTL 600	; 10 minutes
			NS	ns1.example.com.
			NS	ns2.example.com.
$ORIGIN site1.example.com.
$TTL 600	; 10 minutes
serv1			CNAME	site1
serv2			CNAME	site1
site1			A	42.42.42.43