查看 nginx 的日志突然有好多奇怪的的访问

[dai269619118]

220.170.135.107 - - [21/Jul/2015:22:22:22 +0800] "GET http://passport.m3guo.com/index HTTP/1.1" 200 4881 "http://passport.m3guo.com/201548TDReg.html" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 3.0.04506.30; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"

2830593 222.186.52.57 - - [21/Jul/2015:22:27:00 +0800] "GET http://www.kongbao112.com/ HTTP/1.1" 200         4863 "http://www.kongbao112.com" "Mozilla/5.0+(compatible;+Baiduspider/2.0;++http://www.bai        du.com/search/spider.html)"

2830578 124.251.11.37 - - [21/Jul/2015:22:26:54 +0800] "GET http://www.dianping.com/shop/508130 HTTP        /1.1" 302 5 "-" "Go 1.1 package http"

为什么会出现这些访问的记录 奇怪了
大家能帮我看看为什么有这些访问记录

[itbdw]

dns污染，忽略

[lhbc]

探测是不是代理