webcrow.jp.		3600 IN	SOA ns1.webcrow.jp. root.sv0.webcrow.jp. (
				0          ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

webcrow.jp.		60 IN A	112.78.117.100

Name servers:
webcrow.jp.		3600 IN	NS ns1.webcrow.jp.
webcrow.jp.		3600 IN	NS ns2.webcrow.jp.