; <<>> DiG 9.4.0 <<>> @::1 +time=60 aaaa MX.ustc.edu.cn.
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31174
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;MX.ustc.edu.cn.			IN	AAAA

;; ANSWER SECTION:
MX.ustc.edu.cn.		600	IN	AAAA	2001:da8:d800::56

;; AUTHORITY SECTION:
ustc.edu.cn.		115828	IN	NS	NS.ustc.edu.cn.
ustc.edu.cn.		115828	IN	NS	MX.ustc.edu.cn.

;; Query time: 4072 msec
;; SERVER: ::1#53(::1)
;; WHEN: Fri Nov  8 22:10:18 2013
;; MSG SIZE  rcvd: 91