[root@test ~]# dig @
8.8.8.8 nic.wang
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7_5.1 <<>> @
8.8.8.8 nic.wang
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 34877
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;nic.wang. IN A
;; Query time: 31 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: 三 11 月 28 13:59:52 CST 2018
;; MSG SIZE rcvd: 37