$ORIGIN .
$TTL 38400	; 10 hours 40 minutes
0.1.168.192.in-addr.arpa IN SOA dns-server. you.dns-server. (
				2007052400 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				38400      ; minimum (10 hours 40 minutes)
				)
			NS	dns-server.
			NS	dns-server2.
$ORIGIN 0.1.168.192.in-addr.arpa.
1		        PTR	dns-server.
2		        PTR	dns-server2.
3		        PTR	web.