------------
Got answer:
HEADER:
opcode = QUERY, id = 2, rcode = NOERROR
header flags: response, want recursion, recursion avail.
questions = 1, answers = 2, authority records = 0, additional = 0
QUESTIONS:
exmail.qq.com, type = A, class = IN
ANSWERS:
->
exmail.qq.com internet address = 112.90.77.178
ttl = 34 (34 secs)
->
exmail.qq.com internet address = 112.90.78.157
ttl = 34 (34 secs)
------------
甚至进去就看到了一封 Let's Encrypt certificate expiration notice for domain...
@LittleYangYang #17