Area code and exchange code is assigned to every constituent of city in the United States. The area and exchange codes of the telephone can be used to find information about a region. Area code 450 and exchange code 296 is assigned to Notre Dame De Stanbridge. The latitude and longitude corresponding to 45.16 and -73.03 can be used to find an area on the map. Telebec Ltee.operates most of the land lines in United States.