NSLOOKUP是NT、2000中连接DNS服务器，查询域名信息的一个非常有用的命令，简单介绍如下：
实例：查询163.com域名信息
D:>nslookup
Default Server: ns-px.online.sh.cn
Address: 202.96.209.5
当前的DNS服务器 ,可用server命令改变。
设置查选条件为所有类型记录（A、MX等）
查询域名，注意有.
Server: ns-px.online.sh.cn
Address: 202.96.209.5
查询结果~~
Non-authoritative answer:
未证实回答，出现此提示表明该域名的注册主DNS非提交查询的DNS服务器
163.com nameserver = NS.NEASE.NET
163.com nameserver = NS2.NEASE.NET
查询域名的名字服务器
163.com
primary name server = ns.163.com
主要名字服务器
responsible mail addr = admin.NEASE.NET
联系人邮件地址admin@nease.net
serial = 20010348
区域传递序号，又叫文件版本，当发生区域复制时，该域用来指示区域信息的更新情况。
refresh = 10800 (3 hours)
重刷新时间，当区域复制发生时，指定区域复制的更新时间间隔
retry = 3600 (1 hour)
重试时间，区域复制失败时，重新尝试的时间
expire = 360000 (4 days 4 hours)
有效时间，区域复制在有效时间内不能完成，则终止更新
default TTL = 3600 (1 hour)
TTL设置
被查询域名的资料
163.com MX preference = 50, mail exchanger = m218.163.com
163.com MX preference = 50, mail exchanger = m207.163.com
163.com MX preference = 50, mail exchanger = m208.163.com
163.com MX preference = 50, mail exchanger = m209.163.com
163.com MX preference = 50, mail exchanger = m210.163.com
163.com MX preference = 50, mail exchanger = m229.163.com
163.com MX preference = 50, mail exchanger = m246.163.com
163.com MX preference = 50, mail exchanger = m180.163.com
163.com MX preference = 50, mail exchanger = m214.163.com
163.com internet address = 202.106.185.77
163.com nameserver = NS.NEASE.NET
163.com nameserver = NS2.NEASE.NET
NS.NEASE.NET internet address = 202.106.185.75
NS2.NEASE.NET internet address = 61.145.113.57
m218.163.com internet address = 202.108.44.218
m207.163.com internet address = 202.108.44.207
m208.163.com internet address = 202.108.44.208
m209.163.com internet address = 202.108.44.209
m210.163.com internet address = 202.108.44.210
m229.163.com internet address = 202.108.44.229
m246.163.com internet address = 202.108.44.246
m180.163.com internet address = 202.108.44.180
被查询域名的满足条件记录
------------------------
该命令的帮助（汉字部分为说明）
Commands: (identifiers are shown in uppercase, [] means optional)
命令，标记有[]为可选
NAME - print info about the host/domain NAME using default server
查询主机或域名，用缺省服务器
NAME1 NAME2 - as above, but use NAME2 as server
查询主机或域名，用NAME2做提交查询服务器
help or ? - print info on common commands
打印帮助信息
set OPTION - set an option
设置选项
all - print options, current server and host
打印当前选项和服务器
[no]debug - print debugging information
打印调试信息
[no]d2 - print exhaustive debugging information
打印详细的调试信息
[no]defname - append domain name to each query
在查询中增加域名
[no]recurse - ask for recursive answer to query
请求递归查询
[no]search - use domain search list
使用域名搜索列表
[no]vc - always use a virtual circuit
始终使用虚电路
domain=NAME - set default domain name to NAME
设置缺省域名
srchlist=N1[/N2/.../N6] - set domain to N1 and search list to N1,N2, etc.
设置域名列表搜索列表
root=NAME - set root server to NAME
设置根服务器
retry=X - set number of retries to X
设置重试次数
timeout=X - set initial time-out interval to X seconds
设置超时时间
type=X - set query type (ex. A,ANY,CNAME,MX,NS,PTR,SOA,SRV)
设置查询记录类型
querytype=X - same as type
与上同
class=X - set query class (ex. IN (Internet), ANY)
设置查询类
[no]msxfr - use MS fast zone transfer
使用快速区域传递
ixfrver=X - current version to use in IXFR transfer request
server NAME - set default server to NAME, using current default server
lserver NAME - set default server to NAME, using initial server
finger - finger the optional NAME at the current default host
root - set current default server to the root
ls [opt] DOMAIN [> FILE] - list addresses in DOMAIN (optional: output to FILE)
-a - list canonical names and aliases
-d - list all records
-t TYPE - list records of the given type (e.g. A,CNAME,MX,NS,PTR etc.)
view FILE - sort an ls output file and view it with pg
exit - exit the program
退出程序