Atlassian
Atlassian publishes a machine-readable JSON of cloud IP ranges covering Jira, Confluence, Bitbucket, Opsgenie, Statuspage, and other products. The data is filterable by product, direction (egress/ingress), region, and IP version.
Published ranges
Atlassian Cloud IP ranges (all products)
Official feedJSON API returning IP ranges with metadata: product, direction, region, CIDR, mask length, perimeter. The interactive filter tool at ip-ranges.atlassian.com/tool.html lets you narrow by product or direction.