Dig

dig (Domain Information Groper) 是个常用的域名查询工具。dig 的功能比 nslookup 更强大。

用法

dig 基本的用法

dig www.exmaple.com
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> www.exmaple.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63806
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 7

;; QUESTION SECTION:
;www.exmaple.com.               IN      A

;; ANSWER SECTION:
www.exmaple.com.        86400   IN      A       85.119.83.248    // 主机名对应的 IP 地址

;; AUTHORITY SECTION:
exmaple.com.            86365   IN      NS      a.authns.bitfolk.co.uk.
exmaple.com.            86365   IN      NS      c.authns.bitfolk.com.
exmaple.com.            86365   IN      NS      b.authns.bitfolk.com.
exmaple.com.            86365   IN      NS      numpty.absolutelyplastered.com.

;; ADDITIONAL SECTION:
a.authns.bitfolk.co.uk. 172800  IN      A       85.119.80.222
a.authns.bitfolk.co.uk. 172800  IN      AAAA    2001:ba8:1f1:f019::53
b.authns.bitfolk.com.   172764  IN      A       174.136.109.67
b.authns.bitfolk.com.   172764  IN      AAAA    2607:f2f8:a104::53
c.authns.bitfolk.com.   172764  IN      A       173.255.227.192
c.authns.bitfolk.com.   172764  IN      AAAA    2600:3c03::31:2053
numpty.absolutelyplastered.com. 172764 IN A     85.119.82.19

;; Query time: 255 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Mon Feb 22 21:27:01 2016
;; MSG SIZE  rcvd: 321