Question and response
Question
dig math.byu.edu. NS
Answer
math.byu.edu. 86400 NS edns3.byu.edu.
math.byu.edu. 86400 NS edns1.byu.edu.
math.byu.edu. 86400 NS edns2.byu.edu.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0