Blackbaud's PhoneFinder service screens a group of constituent records in your database against a group of national consumer databases. If an exact match is made a residential land line number is returned. Sometimes the service will return a cell phone number if that number has been registered as a ‘residential’ number.National Do Not Call Registry information is not added to the phone numbers. 

After the screening is complete, we send you a data file to append the residential phone number. See How to submit Data for Data Enrichment Services for database specific instructions.