Also Speedtest.net for me is showing a 503 error page. Seems a large CDN might be having problems. Their status page shows all green. FB and their other sites are also down.
edit: I see it's back up and I've been getting downvoted, here's a screenshot of the error for clarity
If Facebook and WhatsApp and Instagram fails there are probably a lot of people checking whether their Internet works. That might be why Speedtest was overwhelmed.
edit: I see it's back up and I've been getting downvoted, here's a screenshot of the error for clarity
https://i.imgur.com/wvhOwwL.png