Delivering communication services is provided. A request for a mobile number from a mobile number authority is received from a subscriber. In response to receiving the request from the subscriber, the mobile number is assigned to the subscriber and sent to the subscriber. A request to register with the mobile number authority is received from a communication service provider. In response to receiving the request from the communication service provider, the communication service provider is registered with the mobile number authority. The mobile number from the mobile number authority may be used by the subscriber to subscribe at the same time to a plurality of communication services for a mobile device from a plurality of different communication service providers registered with the mobile number authority.