$TTL 86400
@	IN	SOA	ns1.ranonet.ne.jp.	root.ranonet.ne.jp.	(
	2010030101	; Serial
	7200		; Refresh
	3600		; Retry
	604800		; Expire
	86400		; Negative Cache TTL
)
	IN	NS	ns1.ranonet.ne.jp.
	IN	NS	ns2.ranonet.ne.jp.
12	IN	PTR	ns1.ranonet.ne.jp.
13	IN	PTR	ns2.ranonet.ne.jp.
14	IN	PTR	mail.ranonet.ne.jp.
15	IN	PTR	www.ranonet.ne.jp.