nslookup命令-域名查询

nslookup命令的英文全称为 “query Internet name server interactively ”。nslookup命令主要用来查询域名的DNS信息。在使用nslookup之前，先确保已经安装了它，nslookup属于bind-utils包下一个命令 。

nslookup有两种工作模式：“交互模式”和“非交互模式”。在命令行中直接输入nslookup，无需输入任何参数即进入交互模式，由“>”提示。

语法格式：nslookup [参数] [域名]

常用参数：

参考实例

在非交互模式下查询域名基本信息：

[root@CmdEye ~]# nslookup CmdEye.com
Server:         192.168.3.2
Address:        192.168.3.2#53
Non-authoritative answer:
Name:    CmdEye.com 
Address: 192.168.3.2
Name:    CmdEye.com
Address: 31:420:0:76::2

进入交互模式下查询域名信息：

[root@CmdEye ~]# nslookup
>CmdEye.com
Server:         192.168.3.2
Address:        192.168.3.2#53 
Non-authoritative answer:
Name:   CmdEye.com
Address: 192.168.3.2
Name:   CmdEye.com
Address: 31:420:0:76::2
>

在交互模式下使用“set”选项设置域名查询类型进行查询：

[root@CmdEye ~]# nslookup
>set type=mx     
>CmdEye.com
Server:         192.168.3.2
Address:        192.168.3.2#53 
Non-authoritative answer:
CmdEye.com  mail exchanger = 1 CmdEye.com.
Authoritative answers can be found from:
CmdEye.com  internet address = 192.168.3.2
CmdEye.com  has AAAA address 31:420:0:76::2