Architecture for normalizing phone numbers and other types of connection information for facilitating mobile communications for users outside their local service areas. When a mobile user attempts to make a connection to a destination entity while outside the user's regular service area, the current location of the user is determined by the system. A normalization rule is selected that corresponds to a local service area associated with the current location. The phone number or other type of connection data string is normalized to the standards of the local service area. The normalized data string is used to automatically complete the connection to the destination entity. In this way, communication is facilitated and simplified for mobile users while traveling abroad.