check web redirect url status code checker

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Response headers
Request headers
Raw HTML code
400 Bad Request - cmcvr.com
HTTP Status: 400
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Thu, 15 May 2025 12:52:41 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
T-Sec-WAF: StdPortNoMatchServer

HTTP Code 400 Bad Request

400 status code indicates that the server cannot process the request due to client error.

When is Code 400 used?

  • When the request is malformed or contains invalid parameters
  • When required data is missing in the request
  • When sending an incorrect JSON or XML payload

What does Code 400 mean for the user?

The user receives an error message indicating that their request is incorrect and needs to be fixed.

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

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Client Bad Request</title>
    <link rel="stylesheet" href="https://imgcache.qq.com/qcloud/security/static/404style.css">
</head>

<body>
    <div class="conent">
        <div class="clientSvg">
            <img src="https://imgcache.qq.com/qcloud/security/static/imgs/clientErr.svg" alt="">
        </div>
        <h1 class="err">很抱歉，您提交的请求存在异常，请向网站管理员确认并获取正确的访问方式</h1>
        <p class="text1">本页面为<span class="text-color">腾讯T-Sec Web应用防火墙(WAF)</span>默认提示页面，如有疑问请联系网站管理员</p>
    </div>
</body>

</html>

Whois info of domain

Domain Name: CMCVR.COM
Registry Domain ID: 2344029550_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.dnspod.cn
Registrar URL: http://www.dnspod.cn
Updated Date: 2024-09-10T10:08:26Z
Creation Date: 2018-12-17T07:27:36Z
Registry Expiry Date: 2029-12-17T07:27:36Z
Registrar: DNSPod, Inc.
Registrar IANA ID: 1697
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +86.4009100100
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: DNS13.HICHINA.COM
Name Server: DNS14.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-15T12:52:36Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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