7caiwang.cn.		600 IN SOA juming.dnsdun.com. juming.dnsdun.com. (
				1          ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

Name servers:
7caiwang.cn.		3600 IN	NS juming.dnsdun.net.
7caiwang.cn.		3600 IN	NS juming.dnsdun.com.