Question and response
Question
dig mailcloud.com.cn. A
Answer
mailcloud.com.cn. 600 A 210.242.150.168
Authority
mailcloud.com.cn. 300 NS ns4.dnsv2.com.
mailcloud.com.cn. 300 NS ns3.dnsv2.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0