This appears to be related: https://twitter.com/InternetIntel/status/1247100092575813635
https://www.ripe.net/support/service-announcements/accidenta...
Last week a large BGP routing leak (>20k prefixes) occurred in Russia briefly impacted internet traffic around the world.
See the interactive 3D visualization of the incident here: https://map.internetintel.oracle.com/leaks#/id/20764_12389_1...