Cannot implement FQDNs to AWS SGs

SonarQube Version 5.6.7

We will be migrating SonarQube from on-premises to AWS. We are unable to apply the below marketplace domain names to an AWS Security Group - would someone be able to please provide the IP addresses instead, and indicate if they will ever change? :

Same problem applies to our other build tool applicaitons - Atlassian Support for Bitbucket and Confluence mentioned a DNS lookup will need to be done and the configured security groups will need to be updated whenever the IP addresses change.
Additionally, a forward proxy should be configured for outbound requests - is the same strategy to apply here?

Thank You! :slight_smile: