In the network world there's the outages mailing list:
https://puck.nether.net/mailman/listinfo/outages
Public archives:
https://puck.nether.net/pipermail/outages/
Latest issue reported:
https://puck.nether.net/pipermail/outages/2020-August/013187... "Level3 (globally?) impacted (IPv4 only)"