A call information server registers with a carrier platform to receive call notifications for a telephone number associated with a mobile device. When an incoming communication is made to the registered telephone number, the call information server receives a call notification before the incoming communication arrives at the mobile device. The call information server then determines the caller information associated with the caller telephone number. The caller information for the caller telephone number is information about an entity that controls or is otherwise associated with the caller telephone number. The call information server sends the caller information and the caller telephone number to the mobile device before the incoming communication arrives at the mobile device. The mobile device can then display the caller information when the incoming communication arrives at the mobile device.