Question and response
Question
dig alibaba.com. PTR
Answer
The response has no answer records.
Authority
alibaba.com. 600 SOA ns1.alibabadns.com. hostmaster.alibabadns.com. 2018051019 3600 1200 86400 360
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0