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 - 31dup.com
HTTP Status: 404
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: nginx
Date: Thu, 01 May 2025 12:47:50 GMT
Content-Type: text/html
Content-Length: 566
Connection: keep-alive

HTTP Code 404 Not Found

404 Not Found 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: 31dup.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<html>
<head><title>404 Not Found</title></head>
<body bgcolor="white">
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>
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Whois info of domain

Domain Name: 31DUP.COM
Registry Domain ID: 2130865445_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.julyname.com
Registrar URL: http://www.julyname.com
Updated Date: 2025-04-30T02:51:30Z
Creation Date: 2017-06-05T03:18:37Z
Registry Expiry Date: 2026-06-05T03:18:37Z
Registrar: July Name Limited
Registrar IANA ID: 3855
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +852.56109513
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: JM1.DNS.COM
Name Server: JM2.DNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-01T12:47:35Z <<<
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
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