Question and response
Question
dig 49.230.215.222.broad.dy.sc.dynamic.163data.com.cn. NS
Answer
49.230.215.222.broad.dy.sc.dynamic.163data.com.cn. 5 CNAME overdue.aliyun.com.
Authority
aliyun.com. 290 SOA hidden-master.aliyun.com. hostmaster.alibaba-inc.com. 2014073179 3600 900 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0