/var/named/SUB012.789.456.123.rev

$ORIGIN	SUB012.789.456.123.in-addr.arpa.
@       IN      SOA     ns.anatanodomain.jp. root.anatanodomain.jp.  (
                                      2003020601 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
		IN	NS	ns.anatanodomain.jp.
		IN	NS	ns2.sphere.ad.jp.

		IN	PTR	anatanodomain-net.anatanodomain.jp.
		IN	A	255.255.255.248

014		IN	PTR	ns.anatanodomain.jp.