check web redirect url status code checker

Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
404 Not Found - mstkc.com
HTTP Status: 404
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: Apache
Content-Length: 967
Pragma: no-cache
Content-Type: text/html;charset=UTF-8
Cache-control: no-store
Connection: close

HTTP Code 404 Not Found

404 status code means that the requested page or resource was not found on the server.

When is Code 404 used?

  • When a page is deleted
  • When the URL is incorrect
  • When there are navigation issues on the website

What does Code 404 mean for the user?

The user sees an error message, and search engines may remove the page from their index.

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>阻断提示信息</title>
</head>
<body>
<p>
<b>尊敬的用户您好：</b> <br />
您访问的网站被机房安全管理系统拦截，可能是以下原因造成：<br />
1.您的网站未备案，或者原备案号被取消，<a href="https://beian.zzidc.com/">进入备案通道</a>.<br />
2.您的网站未添加网站白名单，<a href="https://beian.zzidc.com/main/white/toDomainWhite.html">添加网站白名单</a>.如果已添加，请等待白名单生效.<br />
3.您的网站存在违规、违法等内容被拦截，<a href="https://beian.zzidc.com/main/white/goJcHmd.action">获取网站拦截详情</a><br />
也可联系我司<a href="https://www.zzidc.com/">官网</a>客服咨询.<br />

<!--此处省略50字-->

</p>
</body>
<br> dev:***.***.255.11	domain:mstkc.com  info: </br> </html>

Whois info of domain