Question and response
Question
dig mx0.123-reg.co.uk. NS
Answer
mx0.123-reg.co.uk. 86400 NS cns1.secureserver.net.
mx0.123-reg.co.uk. 86400 NS cns2.secureserver.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0