Downtime few times last month error 520 and never had this before

[user9278]

There was a downtime on May 12, 2023, 05:17 GMT +00:00 for half hour. This has happened also on May 5, 2023, 12:53 GMT +00:00. What could be the problem?
According to uptime robot the reason was Cloudflare Timeout.520

[neiljay]

@user9278

downtime

Best suggested to check the CF status page for any downtime.

Cloudflare Status

@user9278

reason was Cloudflare Timeout.520

If not, I would check the following CommunityTip :

Community Tip - Fixing Error 520: Web server is returning an unknown error

Error Try the suggestions in this Community Tip to help you fix “Error 520: Web server is returning an unknown error”. Background Error 520 is essentially a catch-all response when something unexpected happens or when the origin server incorrectly interprets or does not tolerate a request due to a protocol violation or an empty response. A 520 error occurs when the connection started on the origin web server, but that the request was not completed. The most common reason why this would occur …

[user9278]

Hi @neiljay thanks for tips! You mean the CF status at the overview page of the account? Because there I can see only info about Unique Visitors, Total Requests, et cetera.
I cannot find where I can see something about website up/down status.
Can you tell me where?

And I will check the 520 article

[neiljay]

@user9278

You mean the CF status at the overview page of the account

No. Since you mentioned the following:

@user9278

There was a downtime on May 12, 2023, 05:17 GMT +00:00 for half hour

If so, you can always check the status page to determine such incidents from CF.

[user9278]

Thanks @neiljay . I see only at Cloudflare status pages:
DNS over TLS does not resolve on cloudflare-dns.com This incident has been resolved. May 5, 14:38 - 16:48 UTC

Except that’s a different time. So it seems there was not an issue with Cloudflare although uptimerobot gave that message.