Bitbucket Cloud
Atlassian publishes a JSON feed of cloud IP ranges. Filter for the Bitbucket product in ip-ranges.atlassian.com alongside Bitbucket firewall documentation.
Autonomous systems
Network background
Bitbucket Cloud runs on Atlassian’s commercial cloud perimeter; many ranges overlap other Atlassian products. For Pipelines egress, Atlassian also documents AWS EC2/S3 patterns — see Bitbucket’s firewall article.
Third-party hosting & clouds
Amazon Web Services (typical)
AS16509
Illustrative — ip-ranges.atlassian.com and Atlassian docs are authoritative.
Published ranges
Bitbucket Cloud - Atlassian IP ranges (JSON)
Official feedOfficial Atlassian cloud feed; use entries whose product list includes “bitbucket” for Bitbucket Cloud ingress/egress only (not Server or Data Center).