ztyf.cn.		30 IN SOA ns3.cnolnic.com. root.cnolnic.net. (
				2006112401 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

Name servers:
ztyf.cn.		30 IN NS ns4.cnolnic.com.
ztyf.cn.		30 IN NS ns3.cnolnic.com.