Systems and methods of suggesting supplemental data on a computing device are disclosed herein. For example, the supplemental data can be suggested contact data. A request can be sent to retrieve, from at least one remote data source, suggested contact data associated with a contact entry stored on a storage medium communicatively coupled to the computing device. A confidence level can be determined and associated with the suggested contact data. A request can be sent to display a prompt comprising the suggested contact data on a computing device. Additionally, a confirmation indicative of one of an acceptance of the suggested contact data and a rejection of the suggested contact data can be received. In one example, the confidence level associated with the contact data can be modified in response to the confirmation received.