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 860 is assigned to Santa Ana. The latitude and longitude corresponding to 33.70167 and -117.84808 can be used to find an area on the map. Xo California, Inc.operates most of the land lines in United States.