check web redirect url status code checker

Check server response of

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NS records
Whois domain
Response headers
Request headers
Raw HTML code
301 Moved Permanently - img21.com
HTTP Status: 301
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: nginx
Date: Tue, 29 Apr 2025 15:11:21 GMT
Content-Type: text/html
Content-Length: 162
Connection: keep-alive
Location: https://img21.com/
Strict-Transport-Security: max-age=31536000

HTTP Code 301 Moved Permanently

http status code 301 means that the requested resource has been permanently moved to a new URL. All future requests should use the new address.

When is Code 301 used?

  • When changing a website domain
  • When modifying URL structures
  • When setting up redirects for SEO

What does Code 301 mean for the user?

The browser will automatically redirect the user to the new address, and search engines will update their indexes.

403 Forbidden - https://img21.com/
HTTP Status: 403
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: nginx
Date: Tue, 29 Apr 2025 15:11:22 GMT
Content-Type: text/html
Content-Length: 146
Connection: keep-alive

HTTP Code 403 Forbidden

http status code 403 indicates that access to the requested resource is denied, even with authentication.

When is Code 403 used?

  • When accessing restricted content without necessary permissions
  • When security rules block a request
  • When an IP address is banned

What does Code 403 mean for the user?

The user is informed that they do not have permission to access the resource.

GET / HTTP/1.1
Host: img21.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<html>
<head><title>403 Forbidden</title></head>
<body>
<center><h1>403 Forbidden</h1></center>
<hr><center>nginx</center>
</body>
</html>

Whois info of domain

Domain Name: IMG21.COM
Registry Domain ID: 2731233495_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gname.com
Registrar URL: http://www.gname.com
Updated Date: 2025-03-03T11:08:02Z
Creation Date: 2022-10-11T04:56:24Z
Registry Expiry Date: 2025-10-11T04:56:24Z
Registrar: Gname.com Pte. Ltd.
Registrar IANA ID: 1923
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +65.65189986
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: VIP1.ALIDNS.COM
Name Server: VIP2.ALIDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-04-29T15:11:03Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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