Question and response
Question
dig pop.mtb-1.com. NS
Answer
pop.mtb-1.com. 5 CNAME mtb-1.com.
mtb-1.com. 4 NS pdns02.domaincontrol.com.
mtb-1.com. 4 NS pdns01.domaincontrol.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0