521 Web server is down

The 521 HTTP response status code means that Cloudflare successfully received the request, but it couldn’t establish a connection with the website’s actual server.

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Introduction
In Action
Sample
Conclusion

Introduction

When you encounter the 521 Web server is down status code, it means that Cloudflare successfully received the request, but it couldn’t establish a connection with the website’s actual server.

This indicates that the origin server may be offline or experiencing issues, preventing it from responding to requests. You can try reloading the page later or contact the website administrator to resolve the server-related problem.

In Action

Cloudflare serves as an intermediary between users and website servers. When you encounter the 521 Web server is down status code, it means Cloudflare is trying to connect to the website’s server, but the connection is being refused by the server.

This indicates that the website’s origin server may be experiencing issues or is currently unavailable, preventing Cloudflare from accessing the site’s content. You can wait for the server to come back online or reach out to the website administrator for assistance.

Conclusion

The 521 Web server is down status code means that the website’s server is currently unavailable or experiencing issues. This error is specific to Cloudflare, and it indicates that Cloudflare is unable to establish a connection to the origin server, preventing access to the website’s content. If you encounter this error, you may need to wait for the server to come back online or contact the website administrator for assistance.