docs/data/reusables/actions/runner-essential-communications.md

Needed for essential operations:

github.com
api.github.com
*.actions.githubusercontent.com

Needed for downloading actions:

codeload.github.com
ghcr.io
*.actions.githubusercontent.com

Needed for uploading/downloading job summaries, logs, workflow artifacts, and caches:

results-receiver.actions.githubusercontent.com
*.blob.core.windows.net

Needed for runner version updates:

objects.githubusercontent.com
objects-origin.githubusercontent.com
github-releases.githubusercontent.com
github-registry-files.githubusercontent.com

Needed for retrieving OIDC tokens:

*.actions.githubusercontent.com

Needed for downloading or publishing packages or containers to {% data variables.product.prodname_dotcom %} Packages:

*.pkg.github.com
ghcr.io

Needed for {% data variables.large_files.product_name_long %}

github-cloud.githubusercontent.com
github-cloud.s3.amazonaws.com