zj.cn.			30 IN SOA a.dns.cn. root.cnnic.cn. (
				2027195136 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				2419200    ; expire (4 weeks)
				21600      ; minimum (6 hours)
				)

Name servers:
zj.cn.			30 IN NS e.dns.cn.
zj.cn.			30 IN NS a.dns.cn.
zj.cn.			30 IN NS cns.cernet.net.
zj.cn.			30 IN NS c.dns.cn.
zj.cn.			30 IN NS d.dns.cn.
zj.cn.			30 IN NS b.dns.cn.