Question and response
Question
dig b.dns.usp.br. AAAA
Answer
b.dns.usp.br. 21600 AAAA 2001:12d0:c080:0:0:0:0:208
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0