7c7.com.		30 IN SOA ns1.22.cn. dnsadmin.22.cn. (
				1723540658 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				1800       ; minimum (30 minutes)
				)

Name servers:
7c7.com.		30 IN NS ns1.22.cn.
7c7.com.		30 IN NS ns2.22.cn.