I also find Downdetector's outage map interesting as a self-reported approximation of Telegram usage: https://downdetector.com/status/telegram/map/

Screenshot: https://etc.sanqui.net/20201216_downdetector_telegram_europe...

Came here to post this.

Apparently is getting back up and then going off again.

Misleading title, according to their tweet it's a regional connectivity issue. But yeah, I am affected, that's why I came here.