521 on a DNS but not on other DNS (same target)

Hello,

I was able to navigate to https://generaluskins.com/ I am able to load the site without an active 521.

Are you still experiencing this issue if so? This guide below details some common items to check.

Error 521 occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain Cloudflare IP addresses.

The two most common causes of 521 errors are:

  • Offlined origin web server application
  • Blocked Cloudflare requests

Resolution

Contact your site administrator or hosting provider to eliminate these common causes:

As a 521 is a origin error. We cannot do much for this. Best bet would be to check with the hosting provider. To remedy these 521’s.

#CJT313