check web redirect url status code checker

Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
400 Bad Request - cupcb.com
HTTP Status: 400
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Content-Type: text/html
Date: Thu, 15 May 2025 18:02:32 GMT
Connection: close
Content-Length: 39

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

<h1>Bad Request (Invalid Hostname)</h1>

Whois info of domain

Domain Name: CUPCB.COM
Registry Domain ID: 637037354_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.paycenter.com.cn
Registrar URL: http://www.xinnet.com
Updated Date: 2021-08-06T02:20:06Z
Creation Date: 2006-10-18T15:25:46Z
Registry Expiry Date: 2026-10-18T15:25:46Z
Registrar: Xin Net Technology Corporation
Registrar IANA ID: 120
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +86.4008182233
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1.ORAY.NET
Name Server: NS2.ORAY.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-15T17:54:32Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
NOTICE: The expiration date displayed in this record is the date the
TERMS OF USE: You are not authorized to access or query our Whois
by the following terms of use: You agree that you may use this Data only
to: (1) allow, enable, or otherwise support the transmission of mass