ctys.com.cn.		30 IN SOA ns11.xincache.com. ns12.xincache.com. (
				1742882110 ; serial
				3600       ; refresh (1 hour)
				180        ; retry (3 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

Name servers:
ctys.com.cn.		30 IN NS ns12.xincache.com.
ctys.com.cn.		30 IN NS ns11.xincache.com.