标题：Nslookup命令
Nslookup
简单介绍简单介绍如下： 
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