Cloudflare Error 521: Learn 4 Methods to Fix this Problem
https://www.hostinger.com/tutorials/error-521
WEBFeb 26, 2024 · Error 521 indicates that Cloudflare is unable to establish a connection to your origin server. Therefore, you will need to troubleshoot the issue on your server or with your hosting provider. If you are using Hostinger, you can easily contact customer success to help with fixing this error.
DA: 19 PA: 56 MOZ Rank: 46 Up or Down: Up