unused telephone numbers in each area code. Responding to the controversy, the California Assembly passed the Consumer Area Code Relief Act of 1999 on September 9, 1999, and the 424 overlay was tabled. Having been staved off nearly seven years, the 424 overlay was finally implemented on July 26, 2006, and new telephone numbers issued in the 310 area code may now begin with either 310 or 424. On December 31, 2005, customers began dialing 1 + area code + seven-digit number (cellphones can omit the "1") whenever a call is placed from the 310 area code. After July 26, 2006, customers were required to use the new dialing procedure for all calls. Service area municipalities Los Angeles County Alondra Park Athens Avalon Beverly Hills (small portion in the 323 area code) Carson Compton Culver City Del Aire East Compton El Segundo Gardena Hawthorne (small portion in the 323 area code) Hermosa Beach Inglewood (small portion in the 323 area code) Lynwood Ladera Heights (also in the 323 area code) Lawndale Lennox Lomita Los Angeles Bel Air Brentwood Harbor City Harbor Gateway (small portion in the 323 area code) Pacific Palisades Playa del Rey Playa Vista San Pedro Venice West Los Angeles Westchester Westwood Wilmington Lynwood (small portion in the 323 area code) Malibu Manhattan Beach Marina del Rey Palos Verdes Estates Rancho Palos Verdes Redondo Beach Rolling Hills Estates Rolling Hills Santa Monica South Gate (mostly in the 323 area code and small portion in the 562 area code) Topanga (small portion in the 818 area code) Torrance West Athens (mostly in the 323 area code) West Carson West Compton West Hollywood (also in the 323 area code) Willowbrook (also in the 323 area code) See also List of California area codes List of NANP area codes North American Numbering Plan References External links 310 Area Code Location, Time Zone, Numbers. araara.co. 310 310 Los Angeles County, California Channel Islands of California Santa Monica Mountains South Bay, Los Angeles Westside (Los Angeles County) Telecommunications-related introductions in 1991 Telecommunications-related introductions in 2006