Question and response
Question
dig sfo4.bitnames.com. AAAA
Answer
sfo4.bitnames.com. 172800 AAAA 2604:a880:2:d0:0:0:1ce8:7001
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0