Question and response
Question
dig 233.183.208.222.broad.nc.sc.dynamic.163data.com.cn. NS
Answer
233.183.208.222.broad.nc.sc.dynamic.163data.com.cn. 5 CNAME overdue.aliyun.com.
Authority
aliyun.com. 600 SOA hidden-master.aliyun.com. hostmaster.alibaba-inc.com. 2014073124 3600 900 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0