Activists whose full address (street address, city, zip code, and country) AND mobile number is on their activist record can use call campaigns to call their elected officials and other targets. We offer built-in target lists for U.S. Congress, U.S. Governors, and U.S. State Legislatures. You can upload custom targets with a name, email, ZIP/postal code, and phone number to have activists call a target near them instead. We also offer the option of uploading shapefiles to do this targeting instead. Shapefiles are machine-readable descriptions of shapes on a map. For example, shapefiles could describe the states or regions of a country, or districts for members. More here.