Resolved -
Our server team has fixed the issue and moved the IP back to the server, and has not found any downtime again. All websites are working fine.
May 5, 00:46 UTC
Update -
We are continuing to work on a fix for this issue.
May 1, 09:44 UTC
Identified -
Particular IP - 139.99.255.137 has a DDoS attack, which is under mitigation
May 1, 09:20 UTC