[jurajmlich]

If you change your DNS servers, it works! Their DNS servers probably crashed due to FB's DNS not resolving! (https://twitter.com/BlazejKrajnak)

[IlliOnato]

I tried changing DNS server, including 8.8.8.8 and 1.1.1.1, nothing doing.

I looked up Facebook IP address and tried to go there directly, bypassing the DNS. No response.

(I don't care about Facebook much, it was a test. WhatsApp though I have to use to communicate with relatives.)