AWS publishes a single JSON document of all public IP ranges used by its services, updated as AWS adds or changes address space. CloudFront and every other listed service appear as rows in that same file - filter by the service field (for example CLOUDFRONT) rather than treating separate copies of the JSON as different sources.
Autonomous systems (ASNs)
Known ASNs used by Amazon Web Services.
AS16509
AS14618
AS7224
AWS IP ranges (ip-ranges.json)
Official feedOne feed covers all services and regions (including CloudFront) — filter by service in the JSON or docs.