19.3.4. 逆引き名前解決ゾーンファイル

<last-IP-digit> IN PTR <FQDN-of-system> 

$ORIGIN 1.0.10.in-addr.arpa.
$TTL 86400
@	IN	SOA	dns1.example.com.	hostmaster.example.com. (
			2001062501 ; serial
			21600      ; refresh after 6 hours
			3600       ; retry after 1 hour
			604800     ; expire after 1 week
			86400 )    ; minimum TTL of 1 day
;
@	IN	NS	dns1.example.com.
;
1	IN	PTR	dns1.example.com.
2	IN	PTR	dns2.example.com.
;
5	IN	PTR	server1.example.com.
6	IN	PTR	server2.example.com.
;
3	IN	PTR	ftp.example.com.
4	IN	PTR	ftp.example.com.

zone "1.0.10.in-addr.arpa" IN {
	type master;
	file "example.com.rr.zone";
	allow-update { none; };
};