Question and response
Question
dig mail.infra.duocast.net. AAAA
Answer
mail.infra.duocast.net. 3600 AAAA 2a01:1b0:7999:419:0:0:0:225
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0