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 401 and exchange code 872 is assigned to Woonsocket. The latitude and longitude corresponding to 42 and -71.51 can be used to find an area on the map. Verizon New England Inc. Dba Verizooperates most of the land lines in United States.