From yesterday we sometimes have very slow responses (tens of seconds) and sometimes 520 errors on different sites and different DC.
Example ray ID: 5c4b3dbd09dd8247
A post was merged into an existing topic: 502 errors in Singapore
Problems have users with /cdn-cgi/trace colo=KBP , 520 error every other time. I have a colo=ARN and these same sites work without interruption.
520s are covered at Community Tip - Fixing Error 520: Web server is returning an unknown error.
Unless you generally have issue with all Cloudflare site through the Kiev datacentre, that wouldn’t be a Cloudflare issue but your host seems to block/limit requests from that datacentre.
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