$TTL 86400
@	IN	SOA	web1.obenri.com.	tanaka.obenri.com. (
			2005111401	; Serial
			3H		; Refresh
			15M		; Retry
			1W		; Expire
			1D )		; Minimum

	IN	NS	web1.obenri.com.
1	IN	PTR	router.obenri.com.
11	IN	PTR	web1.obenri.com.