check web redirect url status code checker

Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
200 OK - aa21.com
HTTP Status: 200
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Content-Type: text/html; charset=utf-8
Date: Tue, 06 May 2025 00:15:02 GMT
Transfer-Encoding: chunked

HTTP Code 200 OK

200 status code is a standard successful HTTP server response. It means that the client’s request (e.g., from a browser) was successfully processed, and the server is delivering the requested data.

When is Code 200 used?

  • When loading a web page
  • When successfully receiving an API response
  • When processing a form or another HTTP request

What does Code 200 mean for the user?

The user receives content without errors, and the page or application functions properly. If Code 200 is accompanied by data, the browser or program processes and displays it to the user.

GET / HTTP/1.1
Host: aa21.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<html>
    <head><link rel="icon" href="data:;base64,iVBORw0KGgo="><meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/><script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script><script>$(document).ready(function(){if(window.screen.height<700){$("*").css({"width":"auto","height":"auto","background-image":"none","position":"static"});$("p").css("color","black");$(".stencil-tip").css("line-height","30px");}});</script>
        <title>aa21.com - The domain is available for purchase</title>
        <style type="text/css">
BODY {
	FONT-SIZE: 12px; MARGIN: 18px 0px 0px; COLOR: #424242; BACKGROUND-COLOR: #fff; TEXT-ALIGN: center
}
TD {
	FONT-FAMILY: Arial
}
P {
	FONT-FAMILY: Arial
}
DIV {
	FONT-FAMILY: Arial
}
INPUT {
	FONT-FAMILY: Arial
}
IMG {
	BORDER-RIGHT: 0px; BORDER-TOP: 0px; BORDER-LEFT: 0px; BORDER-BOTTOM: 0px
}
TD {
	FONT-SIZE: 12px; LINE-HEIGHT: 150%
}
TH {
	FONT-SIZE: 12px; LINE-HEIGHT: 150%
}
#f {
	MARGIN: 0px; PADDING-TOP: 4px
}
#B {
	WIDTH: 800px
}
.header {
	BORDER-BOTTOM: #b2d0ea 1px solid; HEIGHT: 13px
}
.header .l {
	FLOAT: left
}
.header .r {
	FLOAT: right
}
.word {
	MARGIN-TOP: 38px;
	FONT-WEIGHT: bold;
	FONT-SIZE: 20px;
	COLOR: #58677d;
	TEXT-INDENT: 20px;
	TEXT-ALIGN: left;
	margin-bottom: 30px;
}
.word123 {
	MARGIN-TOP: 38px;
	FONT-WEIGHT: normal;
	FONT-SIZE: 12px;
	COLOR: #00005B;
	TEXT-INDENT: 20px;
	TEXT-ALIGN: left;
	margin-bottom: 30px;
}
.conter {
	PADDING-RIGHT: 20px; MARGIN-TOP: 15px; PADDING-LEFT: 20px; BACKGROUND: url(http://www.4.cn/www/layout/4/backimg.jpg) no-repeat 0px bottom; PADDING-BOTTOM: 0px; PADDING-TOP: 0px
}
.down {
	BORDER-RIGHT: #b5cfe8 1px solid; BORDER-TOP: #b5cfe8 1px solid; FONT-WEIGHT: bold; BORDER-LEFT: #b5cfe8 1px solid; WIDTH: 345px; COLOR: #808080; BORDER-BOTTOM: #b5cfe8 1px solid; FONT-FAMILY: Verdana,Arial; HEIGHT: 156px; BACKGROUND-COLOR: #e7f5ff
}
.toolr {
	MARGIN: 0px 0px 40px 10px; WIDTH: 200px; TEXT-ALIGN: left
}
.fs_14 {
	FONT-SIZE: 14px; COLOR: #333333
}
.title1 {
	BACKGROUND: url() no-repeat 0px bottom; MARGIN-BOTTOM: 25px; FONT: bold 14px/24px Arial, sans-serif; WIDTH: 400px; COLOR: #333333
}
.title2 {
	BACKGROUND: url() no-repeat 0px bottom; MARGIN-BOTTOM: 8px; FONT: bold 14px/24px Arial, sans-serif; COLOR: #333333
}
.download A {
	PADDING-LEFT: 0px; MARGIN-BOTTOM: 12px; TEXT-DECORATION: none
}
.download {
	MARGIN-BOTTOM: 12px
}
.ph {
	COLOR: #333333
}
.pg {
	COLOR: #737373
}
.style2 {font-size: 16px}
.style3 {color: #FF0000}.comment {	font-size:12px; color:#999; line-height:150%;
}
        </style>
    </head>
    <body link="#004bca" vlink="#004bca">
        <center>
        <div id="B">
        <div class="header">
        <div class="l"><img alt="" width="161" height="23" src="http://www.4.cn/www/layout/3/welcome.gif" /> aa21.com</div>
        <br />
        <br />
        &nbsp;</div>
        <div class="word" style3="">
        <div align="center">您正在访问的域名 <span class="style3">(aa21.com)</span> 可以转让!&nbsp;<br />
        This domain name <span class="style3">(aa21.com)</span> is for sale</div>
        </div>
        <div class="word123" style3="">
        <div align="center">如果您对该域名感兴趣，请<a target="_blank" href="http://www.4.cn/search/detail/domain/aa21.com">点击这里</a>提供您的报价。<br />
        If you would like to purchase this domain name, please <a target="_blank" href="http://www.4.cn/search/detail/domain/aa21.com">click here</a> to make an offer.</div>
        <div align="center">&nbsp;<span style="font-size: 12px; text-align: left;">&nbsp;</span></div>
        <div align="center">&nbsp;</div>
        <div align="center">&nbsp;</div>
        <div align="center"><span style="color: rgb(66, 66, 66);">&nbsp;</span></div>
        </div>
        <div class="header">
        <div class="r">&nbsp;</div>
        </div>
        <div class="conter">
        <table cellspacing="0" cellpadding="0" width="775">
            <tbody>
                <tr>
                    <td valign="middle" align="center">
                    <table cellspacing="0" cellpadding="0" width="100%">
                        <tbody>
                            <tr>
                                <td valign="top" width="210">
                                <div class="toolr">
                                <div class="download">
                                <p><img title="联系方式" alt="联系方式" src="http://www.4.cn/www/layout/4/contact_img.gif" /></p>
                                </div>
                                <div style="line-height: 24px"><span class="style2"><b>QQ：</b>1501782232<br />
                                <b>TEL：</b><br />
                                <b>EMAIL：</b><br />
                                <b>MSN：</b></span><br />
                                &nbsp;</div>
                                </div>
                                </td>
                                <td valign="top" width="561">域名交易方式：<br />
                                <br />
                                <b>通过金名网(4.cn) 中介交易</b><br />
                                <div class="comment">金名网(4.cn)是中国一家知名的域名中介服务商，具体交易流程可<a target="_blank" href="http://www.4.cn/escrow">点击这里查看</a>或咨询[email protected]。整个交易过程大概需要5个工作日。 <br />
                                &nbsp;</div>
                                <b>Escrow through 4.cn</b><br />
                                <div class="comment">www.4.cn is a famous domain name escrow company in China. For the detail process, you can <a target="_blank" href="http://www.4.cn/escrow">visit here</a> or contact [email protected] whole process needs about 5 working days.</div>
                                </td>
                            </tr>
                        </tbody>
                    </table>
                    </td>
                </tr>
            </tbody>
        </table>
        </div>
        <p style="height: 12px">Copyright &copy; 1998 - 2009 aa21.com All Rights Reserved</p>
        </div>
        </center>
        <p>&nbsp;</p>
        <script src="http://s94.cnzz.com/stat.php?id=1794149&web_id=1794149&show=pic2" language="JavaScript"></script>
    <div style="display:none"><script src="https://s13.cnzz.com/z_stat.php?id=707379&web_id=707379" language="JavaScript"></script></div></body>
</html>

Whois info of domain