521 error CloudFlare with my websites

#1

Hello , I’m getting this error a lot

I tried to contact my provider support they told me that Cloudflare Ips range is whitelisted and it may a problem of bad bots and fake log in ; and i installed a plugin for that but still the same problem , sometimes working fine and sometimes shows the error

#2

At least they whitelisted Cloudflare. Are you noticing anything in common when the errors happen? Is it all Paris, or a certain URL? Here’s more 521 information:

#3

Yeah it is all Paris

#4

Any one helps me please

#5

If it’s only the Paris servers, then that’s very strange. Or have you not tested from other locations?

The link I posted has a lot of information and suggestions. If you’ve tried all of that, and it’s still not working, the article(s) say to contact support:
Login to Cloudflare and then contact Cloudflare Support

#6

Yeah it’s always Paris and never tried to test other locations

#7

A repeat visit for me gave me a 521. It’s the same behavior of another recent 521 thread. By chance, are you running Railgun?

#8

Yeah i’m using Railgun

#9

They turned off Railgun and that fixed the problem. Dunno why, though. Support recommended they try that.

#10

And this happened for 3 of my 5 domains , they all Railgun activated , cph-hydro.com - greenglow.co this 2 domains never show 521 error even they are with the same host and railgun activated but this 3 cph-agro.com - cphwa.com - dimel-dz.com are showing always a 521 error

#11

I don’t know who they contacted at Support, but maybe Support can look it up and see what’s going on.

#12

OK i’m looking for the solution

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