暂时删除HOSTS里的东西以后是正常了，但不知该删下面的哪个呢？
127.0.0.1    www.168tom.com
127.0.0.1    dvd.qq92.com
127.0.0.1    www.16yi.com
127.0.0.1    www.ye77.com
127.0.0.1    www.7sese.com
127.0.0.1    www.1yin.net
127.0.0.1    www.77ttt.com
127.0.0.1    www.7mao.com
127.0.0.1    www.mydj2005.com
127.0.0.1    www.joyiex.com
127.0.0.1    mm.227.cn
127.0.0.1    qq92.com
127.0.0.1    www.1432.net
127.0.0.1    qichun.6to23.com
127.0.0.1    www.53best.com
127.0.0.1    www.hao213.net
127.0.0.1    52007.com
127.0.0.1    www.qq.5qt.net
127.0.0.1    4oo.net
127.0.0.1    dvd.sg51.com
127.0.0.1    www.qq46.com
127.0.0.1 localhost
127.0.0.1      www.139cn.com
127.0.0.1      www.7liao.com
127.0.0.1      chat.51liao.net
127.0.0.1      www.51liao.net
127.0.0.1      www.7liao.net
127.0.0.1      www.6see.com
127.0.0.1      bliao.com
127.0.0.1      www.bliao.com
127.0.0.1      www.hao222.net
127.0.0.1      www.hao222.com
127.0.0.1      www.v111.com
127.0.0.1      music.v111.com
127.0.0.1      www.qq165.com
127.0.0.1      www.xicu.com
127.0.0.1      www.haodx.com
127.0.0.1      www.haohz.com
127.0.0.1      www.265.com
127.0.0.1      www.dj99.com
127.0.0.1      www.dj99.net
127.0.0.1      265.com
127.0.0.1      www.yqdj.com
127.0.0.1      www.qq530.com
127.0.0.1      www.tt67.com
127.0.0.1      ad.t2t2.com
127.0.0.1      www.yexr.com
127.0.0.1      chat.9see.com
127.0.0.1      www.ok816.com
127.0.0.1      www.3399.net
127.0.0.1      www.ads8.com
127.0.0.1      www.5566.net
127.0.0.1      www.t2t2.com
127.0.0.1      popad.qq.com
127.0.0.1      v.jsdownload.com
127.0.0.1      www.linktoad.com
127.0.0.1      club.homeway.com.cn
127.0.0.1      sms1.ctn.com.cn
127.0.0.1      sms2.ctn.com.cn
127.0.0.1      sms3.ctn.com.cn
127.0.0.1      www.331122.com
127.0.0.1      mmpic.uni.cc
127.0.0.1      www.love34.com
127.0.0.1      www.free-movie.org
127.0.0.1      www.skyhits.com
127.0.0.1      www.rd18.com
127.0.0.1      tadsweb.tencent.com
127.0.0.1      www.vlike.com
127.0.0.1      www.chinasee.net
127.0.0.1      www.japansky.net
127.0.0.1      www.3721,com
127.0.0.1      cnsmin.3721,com
127.0.0.1      download.3721,com
127.0.0.1      union.3721,com
127.0.0.1      3721.net
127.0.0.1      address.3721,com
127.0.0.1      assistant.3721,com
127.0.0.1      www.225.com.cn
127.0.0.1      ads.china.com
127.0.0.1      www.yes521.com
127.0.0.1      www.today6.com
127.0.0.1      www.h2004.com
127.0.0.1      www.movie4.com
127.0.0.1      www.rm88.com
127.0.0.1      www.qq300.com
127.0.0.1      www.qq500.com
127.0.0.1      www.av126.com
127.0.0.1      www.kissmm.com
127.0.0.1      www.cn808.net
127.0.0.1      www.hao168.com
127.0.0.1      www.mm91.com
127.0.0.1      www.huole.com
127.0.0.1      www.kan69.com
127.0.0.1      ulinkdir.tom.com
127.0.0.1      cpc.sohu.com
127.0.0.1      images.sohu.com
127.0.0.1      adv.pconline.com.cn
127.0.0.1      goto.sohu.com
127.0.0.1      images2.sohu.com
127.0.0.1      www.sexy-books.com
127.0.0.1      www.xxbooks.com
127.0.0.1    www.18it.com
127.0.0.1      www.cnxxx.com
127.0.0.1      www.18-girl.net
127.0.0.1      ad.tom.com
127.0.0.1      ad4.sina.com.cn
127.0.0.1      sina.allyes.com
127.0.0.1      adtaobao.allyes.com
127.0.0.1      smarttrade.allyes.com
127.0.0.1      tom.allyes.com
127.0.0.1      szwindow.allyes.com
127.0.0.1      eachnetmember.allyes.com
127.0.0.1      iplus.allyes.com
127.0.0.1      sinatest.allyes.com
127.0.0.1      casting9.allyes.com
127.0.0.1      yinsha.allyes.com
127.0.0.1      stockstar.allyes.com
127.0.0.1      www.001x.com
127.0.0.1      www.hksexweb.com
127.0.0.1      www.99adultx.com
127.0.0.1      www2.xfreehosting.com
127.0.0.1    www1.xfreehosting.com
127.0.0.1      www.w555.net
127.0.0.1      www.excitecity.com
127.0.0.1      www.0xing.com
127.0.0.1      sba.3322.net
127.0.0.1      www.zgxl.net
127.0.0.1      www.qqpic.com
127.0.0.1      webspacecn.com
127.0.0.1      www.yeapple.com
127.0.0.1      manage.link8.com
127.0.0.1      www.web888.org
127.0.0.1      www.432.cn
127.0.0.1      www.kan123.com
127.0.0.1      www.3tom.com
127.0.0.1      www.sotop.com
127.0.0.1      www3.7789.com
127.0.0.1      www.66036.com
127.0.0.1      www1.66036.com
127.0.0.1      www2.66036.com
127.0.0.1      www3.66036.com
127.0.0.1      www4.66036.com
127.0.0.1      www5.66036.com
127.0.0.1      www6.66036.com
127.0.0.1      www7.66036.com
127.0.0.1      www8.66036.com
127.0.0.1      www9.66036.com
127.0.0.1      www10.66036.com
127.0.0.1      tj4.7789.com
127.0.0.1      tj5.7789.com
127.0.0.1      tj6.7789.com
127.0.0.1      tj7.7789.com
127.0.0.1      www.7789.com
127.0.0.1      count.zhao123.com
127.0.0.1      count1.zhao123.com
127.0.0.1      count2.zhao123.com
127.0.0.1      count3.zhao123.com
127.0.0.1      count4.zhaocount.com

续：
127.0.0.1      count5.zhaocount.com
127.0.0.1      count6.zhaocount.com
127.0.0.1      count7.zhaocount.com
127.0.0.1      count8.zhaocount.com
127.0.0.1      count9.zhaocount.com
127.0.0.1      count10.zhaocount.com
127.0.0.1      count11.zhaocount.com
127.0.0.1      tj1.mytongji.com
127.0.0.1      count1.99count.com
127.0.0.1      www.99count.com
127.0.0.1      bar.baidu.com
127.0.0.1      www2.7789.com
127.0.0.1      www.guang.org
127.0.0.1      www.dlmovie.com
127.0.0.1      www.91look.com
127.0.0.1      www.kan51.com
127.0.0.1      www.mewo.com
127.0.0.1      coolsite21.com
127.0.0.1      www.t3j4.com
127.0.0.1      www.yun8.com
127.0.0.1      film.yun8.com
127.0.0.1      www.wo123.com
127.0.0.1      www.da123.com
127.0.0.1      www.huole.com
127.0.0.1      www.1ya.cn
127.0.0.1      www.sleazydream.com
127.0.0.1      www.easypic2.com
127.0.0.1      serv.sexushost.com
127.0.0.1      www.xfreehosting.com
127.0.0.1      www.888txt.com
127.0.0.1      asiafriendfinder.com
127.0.0.1      www3.cool168.com
127.0.0.1      www2.cool168.com
127.0.0.1      www1.cool168.com
127.0.0.1      www.happy8.cn
127.0.0.1      www.topsex2k.com
127.0.0.1      topxxx.sexushost.com
127.0.0.1      www.cool168.com
127.0.0.1      www.s6.cn
127.0.0.1      popme.163.com
127.0.0.1      adclient.163.com
127.0.0.1      fadama.com
127.0.0.1      www.66vv.com
127.0.0.1      www.qqee.com
127.0.0.1      www.sohu123.com
127.0.0.1      www.xgmm.com
127.0.0.1      www.7t7t.com
127.0.0.1      www.cnimg.com
127.0.0.1      www.love34.com
127.0.0.1      cdn2.cnnic.cn
127.0.0.1      cool.vv66.com
127.0.0.1      www.vv66.com
127.0.0.1      www.freepicturepage.com
127.0.0.1      www.snasty.com
127.0.0.1      www.yourcage.com
127.0.0.1      www.shagadelic.com
127.0.0.1      hualiao.net
127.0.0.1      www.qq163.com
127.0.0.1      www.qq163.net
127.0.0.1      www.superdown.com
127.0.0.1      web.114.com.cn
127.0.0.1      www.114.com.cn
127.0.0.1      9see.com
127.0.0.1      www.91f.cn
127.0.0.1      wwww.tthao.com
127.0.0.1      www.91f.org
127.0.0.1      www.v23.com
127.0.0.1      cn.yimg.com
127.0.0.1      auto.search.msn.com
127.0.0.1      x2.51link.com
127.0.0.1      x1.51link.com
127.0.0.1      www.textlink.cn
127.0.0.1      stat.textclick.com
127.0.0.1      www.easyhere.com
127.0.0.1      www.xxx168.com
127.0.0.1      ally.263.net
127.0.0.1      www.hualiao.net
127.0.0.1      www.xchina.com
127.0.0.1      www.sex.com
127.0.0.1      www.3xcn.com
127.0.0.1      www.20girl.com
127.0.0.1      www.x365x.com
127.0.0.1      chat.263.net
127.0.0.1      chat.yinsha.com
127.0.0.1      chat.tom.com
127.0.0.1      chat.xilu.com
127.0.0.1      www.aliao.com
127.0.0.1      chat.163.com
127.0.0.1      www.haoliao.com
127.0.0.1      www.liaoliao.com
127.0.0.1      www.haoliao.net
127.0.0.1      www.haoliao.cn
127.0.0.1      www.qqliao.com
127.0.0.1      www.qliao.com
127.0.0.1      www.loveliao.com
127.0.0.1      www.mmliao.com
127.0.0.1      mmliao.com
127.0.0.1      aliao.com
127.0.0.1      liaoliao.com
127.0.0.1      chat.qq.com
127.0.0.1      vchat.xaonline.com
127.0.0.1      www.loveliao.net
127.0.0.1      loveliao.net
127.0.0.1      www.chinamp3.com
127.0.0.1      www.9sky.com
127.0.0.1      www.sogua.com
127.0.0.1      sogua.com
127.0.0.1      www.99music.net
127.0.0.1      www.yzskdj.com
127.0.0.1      loveliao.com
127.0.0.1      haoliao.com
127.0.0.1      music.feifa.com
127.0.0.1      www.aisex.com
127.0.0.1      www.movie-down.com
127.0.0.1      www2.movie-down.com
127.0.0.1      movie-down.com
127.0.0.1      www.tt90.com
127.0.0.1      www.tt78.com
127.0.0.1      www.tiankong.net
127.0.0.1      tiankong.net
127.0.0.1      www.qqchat.cn
127.0.0.1      www.yymp3.com
127.0.0.1      www.9see.com
127.0.0.1      www.woliao.net
127.0.0.1      www.woliao.com
127.0.0.1      www.kuro.com.cn
127.0.0.1      www.qq163.com
127.0.0.1      www.wangzhiku.com
127.0.0.1 　　 localhost
127.0.0.1 　  www.qq3344.com      # 包含qq病毒
127.0.0.1 　  www.dj3344.com 　　　# qq病毒
127.0.0.1 　  www.qq3344.com 　　　# qq病毒
127.0.0.1 　  www.yysky.net 　　　 # qq病毒
127.0.0.1 　  www.cnqb.net 　　　　# 禁止你的注册表，改首页，改右键
127.0.0.1 　  hothack.home.chinaren.com
127.0.0.1 　  www.777888.com
127.0.0.1 　  www.5dsoft.com
127.0.0.1 　  www.wokoo.net
127.0.0.1 　　 movie.sx.zj.cn

暂时删除HOSTS里的东西以后是正常了，但不知该删下面的哪个呢？
127.0.0.1 www.168tom.com
127.0.0.1 dvd.qq92.com
127.0.0.1 www.16yi.com
127.0.0.1 www.ye77.com
127.0.0.1 www.7sese.com
127.0.0.1 www.1yin.net
127.0.0.1 www.77ttt.com
127.0.0.1 www.7mao.com
127.0.0.1 www.mydj2005.com
127.0.0.1 www.joyiex.com
127.0.0.1 mm.227.cn
127.0.0.1 qq92.com
127.0.0.1 www.1432.net
127.0.0.1 qichun.6to23.com
127.0.0.1 www.53best.com
127.0.0.1 www.hao213.net
127.0.0.1 52007.com
127.0.0.1 www.qq.5qt.net
127.0.0.1 4oo.net
127.0.0.1 dvd.sg51.com
127.0.0.1 www.qq46.com
127.0.0.1 localhost
127.0.0.1 www.139cn.com
127.0.0.1 www.7liao.com
127.0.0.1 chat.51liao.net
127.0.0.1 www.51liao.net
127.0.0.1 www.7liao.net
127.0.0.1 www.6see.com
127.0.0.1 bliao.com
127.0.0.1 www.bliao.com
127.0.0.1 www.hao222.net
127.0.0.1 www.hao222.com
127.0.0.1 www.v111.com
127.0.0.1 music.v111.com
127.0.0.1 www.qq165.com
127.0.0.1 www.xicu.com
127.0.0.1 www.haodx.com
127.0.0.1 www.haohz.com
127.0.0.1 www.265.com
127.0.0.1 www.dj99.com
127.0.0.1 www.dj99.net
127.0.0.1 265.com
127.0.0.1 www.yqdj.com
127.0.0.1 www.qq530.com
127.0.0.1 www.tt67.com
127.0.0.1 ad.t2t2.com
127.0.0.1 www.yexr.com
127.0.0.1 chat.9see.com
127.0.0.1 www.ok816.com
127.0.0.1 www.3399.net
127.0.0.1 www.ads8.com
127.0.0.1 www.5566.net
127.0.0.1 www.t2t2.com
127.0.0.1 popad.qq.com
127.0.0.1 v.jsdownload.com
127.0.0.1 www.linktoad.com
127.0.0.1 club.homeway.com.cn
127.0.0.1 sms1.ctn.com.cn
127.0.0.1 sms2.ctn.com.cn
127.0.0.1 sms3.ctn.com.cn
127.0.0.1 www.331122.com
127.0.0.1 mmpic.uni.cc
127.0.0.1 www.love34.com
127.0.0.1 www.free-movie.org
127.0.0.1 www.skyhits.com
127.0.0.1 www.rd18.com
127.0.0.1 tadsweb.tencent.com
127.0.0.1 www.vlike.com
127.0.0.1 www.chinasee.net
127.0.0.1 www.japansky.net
127.0.0.1 www.3721,com
127.0.0.1 cnsmin.3721,com
127.0.0.1 download.3721,com
127.0.0.1 union.3721,com
127.0.0.1 3721.net
127.0.0.1 address.3721,com
127.0.0.1 assistant.3721,com
127.0.0.1 www.225.com.cn
127.0.0.1 ads.china.com
127.0.0.1 www.yes521.com
127.0.0.1 www.today6.com
127.0.0.1 www.h2004.com
127.0.0.1 www.movie4.com
127.0.0.1 www.rm88.com
127.0.0.1 www.qq300.com
127.0.0.1 www.qq500.com
127.0.0.1 www.av126.com
127.0.0.1 www.kissmm.com
127.0.0.1 www.cn808.net
127.0.0.1 www.hao168.com
127.0.0.1 www.mm91.com
127.0.0.1 www.huole.com
127.0.0.1 www.kan69.com
127.0.0.1 ulinkdir.tom.com
127.0.0.1 cpc.sohu.com
127.0.0.1 images.sohu.com
127.0.0.1 adv.pconline.com.cn
127.0.0.1 goto.sohu.com
127.0.0.1 images2.sohu.com
127.0.0.1 www.sexy-books.com
127.0.0.1 www.xxbooks.com
127.0.0.1 www.18it.com
127.0.0.1 www.cnxxx.com
127.0.0.1 www.18-girl.net
127.0.0.1 ad.tom.com
127.0.0.1 ad4.sina.com.cn
127.0.0.1 sina.allyes.com
127.0.0.1 adtaobao.allyes.com
127.0.0.1 smarttrade.allyes.com
127.0.0.1 tom.allyes.com
127.0.0.1 szwindow.allyes.com
127.0.0.1 eachnetmember.allyes.com
127.0.0.1 iplus.allyes.com
127.0.0.1 sinatest.allyes.com
127.0.0.1 casting9.allyes.com
127.0.0.1 yinsha.allyes.com
127.0.0.1 stockstar.allyes.com
127.0.0.1 www.001x.com
127.0.0.1 www.hksexweb.com
127.0.0.1 www.99adultx.com
127.0.0.1 www2.xfreehosting.com
127.0.0.1 www1.xfreehosting.com
127.0.0.1 www.w555.net
127.0.0.1 www.excitecity.com
127.0.0.1 www.0xing.com
127.0.0.1 sba.3322.net
127.0.0.1 www.zgxl.net
127.0.0.1 www.qqpic.com
127.0.0.1 webspacecn.com
127.0.0.1 www.yeapple.com
127.0.0.1 manage.link8.com
127.0.0.1 www.web888.org
127.0.0.1 www.432.cn
127.0.0.1 www.kan123.com
127.0.0.1 www.3tom.com
127.0.0.1 www.sotop.com
127.0.0.1 www3.7789.com
127.0.0.1 www.66036.com
127.0.0.1 www1.66036.com
127.0.0.1 www2.66036.com
127.0.0.1 www3.66036.com
127.0.0.1 www4.66036.com
127.0.0.1 www5.66036.com
127.0.0.1 www6.66036.com
127.0.0.1 www7.66036.com
127.0.0.1 www8.66036.com
127.0.0.1 www9.66036.com
127.0.0.1 www10.66036.com
127.0.0.1 tj4.7789.com
127.0.0.1 tj5.7789.com
127.0.0.1 tj6.7789.com
127.0.0.1 tj7.7789.com
127.0.0.1 www.7789.com
127.0.0.1 count.zhao123.com
127.0.0.1 count1.zhao123.com
127.0.0.1 count2.zhao123.com
127.0.0.1 count3.zhao123.com
127.0.0.1 count4.zhaocount.com

续：
127.0.0.1 count5.zhaocount.com
127.0.0.1 count6.zhaocount.com
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127.0.0.1 count1.99count.com
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127.0.0.1 www.wangzhiku.com
127.0.0.1 　　 localhost
127.0.0.1 　 www.qq3344.com # 包含qq病毒
127.0.0.1 　 www.dj3344.com 　　　# qq病毒
127.0.0.1 　 www.qq3344.com 　　　# qq病毒
127.0.0.1 　 www.yysky.net 　　　 # qq病毒
127.0.0.1 　 www.cnqb.net 　　　　# 禁止你的注册表，改首页，改右键
127.0.0.1 　 hothack.home.chinaren.com
127.0.0.1 　 www.777888.com
127.0.0.1 　 www.5dsoft.com
127.0.0.1 　 www.wokoo.net
127.0.0.1 　　 movie.sx.zj.cn

请问
127.0.0.1  是IP地址吗?