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 424 and exchange code 275 is assigned to LOS ANGELES. The latitude and longitude corresponding to 33.859319869628 and -118.389159233371 can be used to find an area on the map. Mosaic Networx LLC - CAoperates most of the land lines in United States.