| District of California area codes: 310 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Los Angeles |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 310-342 | Los Angeles | Inglewood, CA | Pacific Bell |
| 310-343 | Los Angeles | Los Angeles, CA | Teleport Communications Group - Los Angeles |
| 310-344 | Los Angeles | Gardena, CA | New Cingular Wireless PCS |
| 310-345 | Los Angeles | Gardena, CA | Sprint Spectrum L.p. |
| 310-346 | Los Angeles | Gardena, CA | Sprint Spectrum L.p. |
| 310-347 | Los Angeles | Torrance, CA | New Cingular Wireless PCS |
| 310-348 | Los Angeles | Inglewood, CA | Pacific Bell |
| 310-349 | Los Angeles | Hawthorne, CA | Pacific Bell |
| 310-350 | Los Angeles | Torrance, CA | Sprint Spectrum L.p. |
| 310-351 | Los Angeles | Los Angeles, CA | Cellco Partnership DBA Verizon Wireless |
| 310-352 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-353 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-354 | Los Angeles | Gardena, CA | Pacific Bell |
| 310-355 | Los Angeles | Hawthorne, CA | Pacific Bell |
| 310-356 | Los Angeles | Los Angeles, CA | Global Crossing Local Services-ca |
| 310-357 | Los Angeles | Torrance, CA | Teleport Communications Group - Los Angeles |
| 310-358 | Los Angeles | Beverly Hills, CA | Pacific Bell |
| 310-359 | Los Angeles | Malibu, CA | Pac - West Telecomm |
| 310-360 | Los Angeles | Beverly Hills, CA | Pacific Bell |
| 310-361 | Los Angeles | Los Angeles, CA | Pac - West Telecomm |
There are 787 prefixes, In the code area, the major cities are Beverly Hills, CA;Carson, CA;Culver City, CA;Garde. The major city is Los Angeles.