hb-hengxin.cn.		30 IN SOA . hostmaster.nameserver. (
				48         ; serial
				28800      ; refresh (8 hours)
				7200       ; retry (2 hours)
				604800     ; expire (1 week)
				5          ; minimum (5 seconds)
				)
hb-hengxin.cn.		30 IN CNAME 137155.isp.cx.
hb-hengxin.cn.		30 IN CNAME 137155.isp.cx.

137155.isp.cx.		30 IN A	119.15.137.155
hb-hengxin.cn.		30 IN CNAME 137155.isp.cx.