Question and response
Question
dig mail.korpdns.net. NS
Answer
mail.korpdns.net. 5 CNAME korpdns.net.
korpdns.net. 4 NS falkenstein.ns.korpcloud.com.
korpdns.net. 4 NS istanbul.ns.korpcloud.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0