An apparatus, method, system, and computer-readable medium are provided for maintaining contact information associated with a contact. In some embodiments a request associated with a contact may be received. Contact information may be obtained from one or more external or internal sources. One or more confidence scores may be generated for the obtained contact information and for one or more values received with the request. Based on the confidence score(s), one or more values associated with the contact may be incorporated in one or more data stores. In some embodiments, suggestions for contact related information may be generated. Responses to the suggestions may be used to update the generated confidence score(s).