My app has to receive push-notifications and right now am getting SERVICE_NOT_AVAILABLE after GoogleCloudMessaging.register() call.

My client has a strict firewall in his office and he doesn't have access to Google Play Services. I need to provide him a list of all URL's that Google Play services needs access to, so he can add it to white list.

So far there's only one url in my list: googleapis.com

I didn't find any information on this subject, so I will appreciate any help.