sczhoubing
hosts文件將主機名稱映射到 IP 地址，並且它存儲於 /%Systemroot%/System32/Drivers/Etc 文件夾中。該文件建立主機名稱（域名）與IP地址的對應關係，可以理解爲本機的DNS系統。每當操作系統聯網要訪問一主機（域名）時，優先到hosts文件中查找是否有相應記錄，如有則讀取hosts的記錄，無則訪問指定的dns服務器。這樣我們可以利用hosts文件來實現一些特別的功能，如過濾垃圾網站，建立本機環境的域名解析（這對本機測試網站很有幫助）。
hosts文件內容格式示例如下：
IP地址 主機名（域名） 註釋（可有可無）
102.54.94.97 rhino.acme.com # source server
38.25.63.10 x.acme.com # x client host
127.0.0.1 www.test.com #本機網站測試環境
簡單吧～～，以下內容爲網友們整理共享的hosts文件，相信能用得上。
# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
127.0.0.1 localhost
#3721
127.0.0.1 3721.com
127.0.0.1 3721.net
127.0.0.1 cnsmin.3721.com
127.0.0.1 cnsmin.3721.net
127.0.0.1 download.3721.com
127.0.0.1 download.3721.net
127.0.0.1 www.3721.com
127.0.0.1 www.3721.net
127.0.0.1 sbox.3721.com
127.0.0.1 union.3721.com
#百度
127.0.0.1 bar.baidu.com
127.0.0.1 www.baidu.com
127.0.0.1 baidu.com
127.0.0.1 download.baidu.com
127.0.0.1 bar.baidu.com
#cnnic
127.0.0.1 cdn2.cnnic.cn
127.0.0.1 cnnic.net.cn
127.0.0.1 www.cnnic.net.cn
127.0.0.1 www.cnnic.com
127.0.0.1 www.cnnic.com.cn
127.0.0.1 www.cnnic.net
#sina
127.0.0.1 ads.china.com
127.0.0.1 ad1.sina.com.cn
127.0.0.1 ad2.sina.com.cn
127.0.0.1 ad3.sina.com.cn
127.0.0.1 ad4.sina.com.cn
127.0.0.1 uil.sina.com.cn
127.0.0.1 sina.allyes.com
127.0.0.1 classad.bj.sina.com.cn
#163.com
127.0.0.1 popme.163.com
127.0.0.1 ad4.163.com
127.0.0.1 ad.163.com
127.0.0.1 mob.163.com
127.0.0.1 images.163.com
127.0.0.1 img.163.com
127.0.0.1 adcc.163.com
127.0.0.1 adimg.163.com
#sohu.com
127.0.0.1 images.sohu.com
#tom.com
127.0.0.1 image.cn.tom.com
127.0.0.1 smsad.tom.com
127.0.0.1 usmsad.tom.com
127.0.0.1 sms1ad.tom.com
127.0.0.1 tomad.cn.tom.com
#china.com
127.0.0.1 lovesky.china.com
127.0.0.1 ads.china.com
127.0.0.1 adserver.china.com
# CuteFTP
127.0.0.1 cuteftp.com
127.0.0.1 dbregistration.cuteftp.com
127.0.0.1 globalscape.com
127.0.0.1 www.cuteftp.com
127.0.0.1 www.globalscape.com
# FlashFXP
127.0.0.1 flashfxp.com
127.0.0.1 flashfxp.org
127.0.0.1 flashfxp.ws
127.0.0.1 www.flashfxp.com
127.0.0.1 www.flashfxp.org
127.0.0.1 www.flashfxp.ws
# WinDVD
127.0.0.1 upgrade.intervideo.com
#QQ***
127.0.0.1 qq168.cn
127.0.0.1 qq163.cn
127.0.0.1 qq163.com
127.0.0.1 qq530.com
127.0.0.1 qq530.net
127.0.0.1 qq988.com
127.0.0.1 qq250.com
127.0.0.1 www.qq588.com
127.0.0.1 www.qq3344.com
127.0.0.1 www.qq163.com
127.0.0.1 www.qq168.net
127.0.0.1 www.qq168.com
127.0.0.1 www.qq530.com
127.0.0.1 www.qq530.net
127.0.0.1 www.qq520.com
127.0.0.1 www.qq520.net
127.0.0.1 www.qq988.com
127.0.0.1 www.qq988.net
127.0.0.1 www.qq886.com
127.0.0.1 www.qq250.com
#other
127.0.0.1 www.hao114.com
127.0.0.1 hao114.com
127.0.0.1 www.hao3344.com
127.0.0.1 www.hao123.com
127.0.0.1 xxx.hao114.com
127.0.0.1 haodd.net
127.0.0.1 www.haodd.com
127.0.0.1 www.mtvccc.com
127.0.0.1 125m.bl.am
127.0.0.1 ksfd.pledaily.com
127.0.0.1 cn.1dnn.com
127.0.0.1 sy01.pledaily.com
127.0.0.1 ksfd.pledaily.com
127.0.0.1 www.8k1.com
127.0.0.1 tz.am5.com
127.0.0.1 520y.hk.st
127.0.0.1 ommm.126.com
127.0.0.1 www.da123.com
127.0.0.1 www.7758520.com
127.0.0.1 www.1314521.com
127.0.0.1 www.fm214.com
127.0.0.1 kan123.com
127.0.0.1 ****mm.2hu.org
127.0.0.1 www.yes8888.com
127.0.0.1 qile.net/qz
127.0.0.1 www.cc11.com
127.0.0.1 www.8812345.com
127.0.0.1 movie.888x.net
127.0.0.1 www.94135.com
127.0.0.1 k3b.126.com
127.0.0.1 www.kafei8.com
127.0.0.1 goodgirl.2hu.org
127.0.0.1 www.zhao123.com
127.0.0.1 web.fs169.net/zhufei/new_page_12.htm
127.0.0.1 www.yysky.com
127.0.0.1 music888.ximan.com
127.0.0.1 www.eee888.com
127.0.0.1 top2008.com/sos/
127.0.0.1 www.i-lookup.com
127.0.0.1 www.mtvxp.com
127.0.0.1 www.film3344.net
127.0.0.1 www.jcwz.com
127.0.0.1 bbll.bl.am
127.0.0.1 www.w163.com
127.0.0.1 www.mmm110.com
127.0.0.1 www.fun520.com
127.0.0.1 www.fun530.com
127.0.0.1 www.fassia.net
127.0.0.1 www.cnqb.net
127.0.0.1 www.mmqm.com
127.0.0.1 www.nicex.126.com
127.0.0.1 nicex.126.com
127.0.0.1 www.ktv530.com
127.0.0.1 approvedlinks.com
127.0.0.1 www.lj163.net/dj/
127.0.0.1 www.98138.com
127.0.0.1 www.5478.cn
127.0.0.1 sms888.vip.sina.com/kodp/index.html
127.0.0.1 coolmov.net
127.0.0.1 www.oo163.com
127.0.0.1 www.9fe.com
127.0.0.1 somtv.8u8.com
127.0.0.1 www.www520.com
127.0.0.1 www.ww520.com
127.0.0.1 www.kv530.com
127.0.0.1 8zu.nease.net/reg/index.htm
127.0.0.1 www.zfcx.com
127.0.0.1 www.126p.com
127.0.0.1 www.17908.net
127.0.0.1 we.cn.gs
127.0.0.1 www.ok530.com
127.0.0.1 www.7sou.com
127.0.0.1 www.qamtv.com
127.0.0.1 www.3189.net
127.0.0.1 www.ttjj.com
127.0.0.1 www.88music.com
127.0.0.1 www.9135.net
127.0.0.1 www.mm365.com
127.0.0.1 www.4578.cn
127.0.0.1 www.hao321.com
127.0.0.1 aa.wlqs.net
127.0.0.1 bb.wlqs.net
127.0.0.1 www.sms888.vip.sina.com/mmm
127.0.0.1 www.yy369.com
127.0.0.1 leomp3.126.com
127.0.0.1 ye99.com/2/
127.0.0.1 mhxc.bl.am
127.0.0.1 nicex.4y.cn
127.0.0.1 www.intersms.net
127.0.0.1 www.cctv8.net
127.0.0.1 rc2.126.com
127.0.0.1 jinboy.fats8.com/qz
127.0.0.1 www.eliao.net
127.0.0.1 www.7guai.com
127.0.0.1 www.52l.com
127.0.0.1 pydd.nease.net
127.0.0.1 www.net8.com
127.0.0.1 www.9yao.com
127.0.0.1 www.yy234.com
127.0.0.1 www.yunhh.com
127.0.0.1 www.internet-optimizer.com
127.0.0.1 www.qin8.com
127.0.0.1 www.ye99.com
127.0.0.1 nicex.yeah.net
127.0.0.1 www.skywz.com
127.0.0.1 www.ent8.com
127.0.0.1 www.haohz.com
127.0.0.1 www.dj3344.com
127.0.0.1 www.pixpox.com
127.0.0.1 www.37021.com
127.0.0.1 www.58589.com
127.0.0.1 www.xuncai.com
127.0.0.1 ad.cn.doubleclick.net
127.0.0.1 ans1.adsoftware.com
127.0.0.1 www.reget.com
127.0.0.1 beta.reget.com
127.0.0.1 ad.cn.doubleclick.com
127.0.0.1 bjcenter.allyes.com
127.0.0.1 ad.cn.doubleclick.net
127.0.0.1 bjcenter.allyes.com
127.0.0.1 ad1.beareyes.com.cn
127.0.0.1 fabu.beareyes.com.cn
127.0.0.1 www.szlg.com
127.0.0.1 ad.mydrivers.com
127.0.0.1 ads.21cn.com
127.0.0.1 ad21cn.allyes.com
127.0.0.1 free.21cn.com
127.0.0.1 count.2118.com.cn
127.0.0.1 www.88gol.com
127.0.0.1 sms1.ctn.com.cn
127.0.0.1 partner.lead2.com.cn
127.0.0.1 ad.xaonline.com
127.0.0.1 yule.xaonline.com