Question and response
Question
dig us20-west.irondns.net. AAAA
Answer
us20-west.irondns.net. 300 AAAA 2a01:5b0:23:0:0:0:0:2
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0