bu5.cn.			30 IN SOA dns.bizcn.com. dnscont.dns.bizcn.com. (
				1          ; serial
				28800      ; refresh (8 hours)
				14400      ; retry (4 hours)
				14400      ; expire (4 hours)
				3600       ; minimum (1 hour)
				)

bu5.cn.			30 IN A	103.20.222.179

Mail exchangers:
bu5.cn.			30 IN MX 10 mxdomain.qq.com.

Name servers:
bu5.cn.			30 IN NS ns5.cnmsn.net.
bu5.cn.			30 IN NS ns6.cnmsn.net.