Question and response
Question
dig smtp.is.hvfree.net. AAAA
Answer
smtp.is.hvfree.net. 3600 AAAA 2a01:490:1c:4:0:0:0:33
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0