* Sandbox: The sandbox environment is used for initial development and testing of the provider application. It provides the same set of services as the production environment, although with a smaller number of server units. The sandbox environment also acts a virtual device, enabling simulated end-to-end testing.

You access the sandbox environment at gateway.sandbox.push.apple.com, outbound TCP port 2195.

   * Production: Use the production environment when building the production version of the provider application. Applications using the production environment must meet Apple’s reliability requirements.

You access the production environment at gateway.push.apple.com, outbound TCP port 2195.