通过dig www.google.com.hk可以得到其ip为74.125.128.199。用同样到办法去获得dict.cn（海辞）这个网站的ip却失败了。所得到到ip并不正确，这是为什么呢？难道是在浏览器地址栏里所显示的并不是其真正到域名？
IP是正确的， 只是禁止了通过IP直接访问网站
可能对方用了CDN 或者有一个前端的服务器 防止DDOS什么的
为你们捉急啊。
[~/Develop/asm] % dig dict.cn
; <<>> DiG 9.9.1-P3 <<>> dict.cn
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11754
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;dict.cn. IN A
;; ANSWER SECTION:
dict.cn. 488 IN A 69.13.33.56
;; Query time: 12 msec
;; SERVER: 209.18.47.61#53(209.18.47.61)
;; WHEN: Sun Oct 28 16:39:53 2012
;; MSG SIZE rcvd: 52
[~/Develop/asm] % curl -v 69.13.33.56
* About to connect() to 69.13.33.56 port 80 (#0)
* Trying 69.13.33.56...
* connected
* Connected to 69.13.33.56 (69.13.33.56) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.25.0 (x86_64-suse-linux-gnu) libcurl/7.25.0 OpenSSL/1.0.1c zlib/1.2.7 libidn/1.25 libssh2/1.4.0
> Host: 69.13.33.56
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Server: Dict/34.002
< Date: Sun, 28 Oct 2012 23:39:57 GMT
< Content-Type: text/html
< Transfer-Encoding: chunked
< Connection: keep-alive
< Keep-Alive: timeout=60
< Set-Cookie: uvid=UI3CTYTSE8Z+; expires=Thu, 31-Dec-37 23:55:55 GMT; domain=.dict.cn; path=/
<
<html>
<head><title>404 Not Found</title></head>
<body bgcolor="white">
<center><h1>404 Not Found</h1></center>
<hr><center>Dict/34.002</center>
</body>
</html>
* Connection #0 to host 69.13.33.56 left intact
* Closing connection #0
[~/Develop/asm] % curl -H"Host: dict.cn" http://69.13.33.56
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>在线翻译_在线词典_英语在线翻译_海词词典_中国最专业的网络词典</title>
<meta name="keywords" content="在线翻译,在线词典,英语在线翻译,英语词典,英汉词典,翻译,海词词典" />
<meta name="description" content="海词词典为英语学习者提供在线词典、英语在线翻译、权威学习资料，是新时代的学习型网络词典，拥有2000万海量词汇，1亿忠实用户，是老师和学生们的首选专业在线词典品牌。" />
<meta name="author" content="海词词典" />
<link rel="canonical" href="http://dict.cn" />
<link rel="icon" href="/favicon.ico" type="/image/x-icon" />
<link rel="shortcut icon" href="/favicon.ico" type="/image/x-icon" />
<link href="http://cdn.dfile.cn/v/1351151793/i1/css/base.min.css" media="screen" rel="stylesheet" type="text/css" />
<link href="http://cdn.dfile.cn/v/1351151794/i1/css/obase.min.css" media="screen" rel="stylesheet" type="text/css" />
<script src="http://cdn.dfile.cn/i1/js/jquery-1.8.0.min.js" type="text/javascript"></script>
<script>var cur_dict = 'dict';var i1_home='http://cdn.dfile.cn';var xuehai_home='http://xuehai.cn';var passport_home='http://passport.dict.cn';</script>
</head>
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<param name="movie" value="http://cdn.dfile.cn/v/1351071710/i1/js/player/player.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />
<param name="allowScriptAccess" value="always" />
<param name="allowFullScreen" value="true" />
<param name="hasPriority" value="true" />
<param name="FlashVars" value="volume=100" />
<embed style="position:absolute;top:-1000%;width:1px;height:1px;-khtml-opacity:0;-moz-opacity:0;opacity:0;" src="http://cdn.dfile.cn/v/1351071710/i1/js/player/player.swf" quality="high" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed>
</object>
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<div class="logo">
<h1>
<div slot="1">
<a href="/" title="在线翻译，在线词典"><img alt="海词词典" src="http://cdn.dfile.cn/i1/images/dict_logo.png" /></a>
</div>
</h1>
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<li class="cur"><a href="http://dict.cn"><b>英 汉</b></a><i></i></li>
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<form id="sf" action="/search.php" method="get">
<div class="search-box-i"><input type="text" id="q" name="q" class="search-i" autocomplete="off" placeholder="请输入要查询的单词、短语" x-webkit-speech /></div>
<div class="search-box-btn"><input type="submit" name="search" class="search-btn" value="查词" title="查词" /></div>
<div class="cl"></div>
</form>
</div>
</div>
<div class="en_every_day plr190">
<strong>每日一句:</strong>
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<p>©2003 - 2012 <a href="http://dict.cn/">海词词典</a>(Dict.CN) - 自 2003 年 11 月 27 日开始服务 沪ICP备08018881号 <a target="_blank" href="http://www.sgs.gov.cn/lz/licenseLink.do?method=licenceView&entyId=20120601170952752"><img border="0" src="http://cdn.dfile.cn/i1/images/gs_icon.gif"></a></p>
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<script type="text/javascript">
var cur_dict = 'dict', i1_home='http://cdn.dfile.cn', xuehai_home='http://xuehai.cn', passport_home='http://passport.dict.cn', $dict_id = null, $dict_query = null, $dict_dict = null, $user_id = 0, $dict_ver=1351151794;
</script>
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可能是默认DNS查询失败?向别的DNS查询下?