Question and response
Question
dig qcloudmail.com. NS
Answer
qcloudmail.com. 86400 NS ns4.dnsv2.com.
qcloudmail.com. 86400 NS ns3.dnsv2.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0