Question and response
Question
dig smtp.ipv6.dragon.cz. AAAA
Answer
smtp.ipv6.dragon.cz. 14400 AAAA 2a02:13b8:800:0:0:0:0:25
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0