A few days ago our hosted grafana connection to a RDS DB stopped working, turns our your IP list changed.
When creating ingress IP/CIDR rules for an AWS ec2 security group, the max number of rules you can have is 60.
https://grafana.com/api/hosted-grafana/source-ips.txt currently has 62 IPs.
Does Grafana hosted have CIDR blocks it can publish?
Update: ended up just adding a 2nd security group to my RDS. Not ideal.