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403 Forbidden - mdpi.com
HTTP Status: 403
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Mime-Version: 1.0
Content-Type: text/html
Content-Length: 358
Expires: Fri, 16 May 2025 08:34:09 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Fri, 16 May 2025 08:34:09 GMT
Connection: close
Server-Timing: cdn-cache; desc=HIT
Server-Timing: edge; dur=1
Akamai-GRN: 0.23ee1502.1747384449.4121c776
Server-Timing: ak_p; desc="1747384449040_34991651_1092732790_9_3906_7_0_-";dur=1

HTTP Code 403 Forbidden

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

<HTML><HEAD>
<TITLE>Access Denied</TITLE>
</HEAD><BODY>
<H1>Access Denied</H1>
 
You don't have permission to access "http&#58;&#47;&#47;mdpi&#46;com&#47;" on this server.<P>
Reference&#32;&#35;18&#46;23ee1502&#46;1747384449&#46;4121c776
<P>https&#58;&#47;&#47;errors&#46;edgesuite&#46;net&#47;18&#46;23ee1502&#46;1747384449&#46;4121c776</P>
</BODY>
</HTML>

Whois info of domain

Domain Name: MDPI.COM
Registry Domain ID: 108607629_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2024-05-12T20:48:31Z
Creation Date: 2003-12-19T19:18:00Z
Registry Expiry Date: 2034-05-12T20:40:30Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.8777228662
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: DUKE.NS.CLOUDFLARE.COM
Name Server: TIA.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-16T08:33:58Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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