> ## Documentation Index
> Fetch the complete documentation index at: https://astronomer.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Add Astro domains to your network

To use Astro in a network that requires you to allowlist new domains, make a request to allowlist the following domains on your network:

* `https://cloud.astronomer.io/` - Astro Cloud Hosted service, so your users can access the Astro UI to manage your Astro and Airflow infrastructure.
* `https://api.astronomer.io/` - Astro API, so you can programmatically manage your Astro and Airflow infrastructure.
* `https://images.astronomer.cloud/` - Only required for [Remote Execution](/docs/astro/execution-mode). The Remote Execution Agent pulls images from this domain.
* `https://auth.astronomer.io/` - Domain needed for authenticating requests to login to the Astro Cloud Hosted service.
* `https://updates.astronomer.io/` - Domain used to check for new versions of Astro Runtime images. Astro alerts you to new Runtime versions in Airflow Deployments’ UIs.
* `https://install.astronomer.io/` - Domain needed to install the Astro CLI, which is used for deploying project images to Astro.
* `https://*.astronomer.run/` (Recommended) - URLs for your individual Airflow Deployments in Astro. Allowlist needed so your users can connect to them to manage workflows.
* `https://<organization-id>.astronomer.run/` - Only required if you don't use the recommended wildcard hostname, `https://*.astronomer.run/`. Individual Deployment URL for your Organization, used instead of wildcard.
* `https://<clusterId>.registry.astronomer.run/` - Only required if you don't use the recommended wildcard hostname, `https://*.astronomer.run/`. Domain required to push images for your Airflow Deployments if you don't use the wildcard hostname.
* `https://<clusterId>.external.astronomer.run/` - Only required for [Remote Execution](/docs/astro/execution-mode) Deployments. These domains represent your Airflow Deployments' orchestration plane. They must be allowlisted so your Remote Execution Agents can connect to them.
* `https://o11y.astronomer.io` - Astro OpenLineage URL endpoint required for integration with the [Astro Observe](/docs/astro/observe-get-started) and [Alerts](/docs/astro/alerts) features.

To locate the value for `<organization-id>` in the Astro UI, click **Settings** (**Organization Settings** in the legacy UI). Copy the value listed under **Organization ID**.
To locate the value for `<clusterId>` in the Astro UI, go to **Settings** > **Clusters** (in the legacy UI, go to **Organization Settings** > **Clusters**), and copy the **ID** value under each cluster's details page.

To build and deploy Astro project images, additionally allowlist the following domains:

* `https://air.astronomer.io` - Domain needed for accessing Astro Runtime images.
* `https://astrocrpublic.azurecr.io` - Domain needed for accessing Astro Runtime images, in case a redirect from `https://air.astronomer.io` doesn't work with your networking.
* `https://pip.astronomer.io` - Domain needed for installing packages in images.
* `https://install.astronomer.io` - Domain needed in order to install the Astro CLI, which is used for deploying project images to Astro.
* `https://raw.githubusercontent.com` - Domain needed as an alternative way to access GitHub-hosted content.
* `https://pypi.org` - Domain needed for installing Python packages in images.
* `https://astroproddagdeployment.blob.core.windows.net` - Domain needed to upload Dag bundles to the Astronomer managed storage account.