GitHub

GitHub publishes machine-readable metadata including hooks and API IP endpoints for firewall configuration.

Autonomous systems

GitHub is operated by Microsoft; egress often appears in major cloud ASNs. Use api.github.com/meta and GitHub’s changelog when allowlisting.

Third-party hosting & clouds

Microsoft / Azure (typical)

AS8075AS12076

Illustrative only—meta JSON is authoritative for hook ranges.

Official documentation and feeds for each product—open the links for current ranges and verification guidance.

Official feed

JSON with hooks, web, API, Git, pages, importer, and other IP lists maintained by GitHub.