I'm looking to allow connections from AWS Quicksight to my PostgreSQL database.
And in their FAQ they offer some advice that Quicksight has a dedicated IP range
Q: How do I connect my VPC to Amazon QuickSight? If your VPC has been set up with public connectivity, you can add Amazon QuickSight’s IP address range to your database instances’ security group rules to enable traffic flow into your VPC and database instances.
But in the AWS IP Ranges JSON file (https://ip-ranges.amazonaws.com/ip-ranges.json) there is no mention of the AWS Quicksight range.