Question and response
Question
dig fastmail.com. NS
Answer
fastmail.com. 3600 NS fmns1.messagingengine.com.
fastmail.com. 3600 NS fmns2.messagingengine.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0