AWS Cloud Discovery Service EndpointDescriptionIf blanket allowance for “*.amazonaws.com” cannot be provided for AWS Cloud Discovery, List of exact URL endpoints need to be whitelisted to run the AWS Cloud Discovery.ResolutionUse the list in below AWS documentation for service endpoints:https://docs.aws.amazon.com/general/latest/gr/ec2-service.html Refer to the attached file "aws-general.pdf" (downloaded from https://docs.aws.amazon.com/general/latest/gr/rande.html) for the same information at page 125.There's one more URL to add:https://ec2.amazonaws.comThis should cover the URLs that AWS cloud discovery need.Additional InformationAmazon Documentation: https://docs.aws.amazon.com/general/latest/gr/rande.html https://docs.aws.amazon.com/general/latest/gr/aws-service-information.html https://docs.aws.amazon.com/general/latest/gr/ec2-service.html