| District of California area codes: 909 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Riverside |
| Time Zone | Pacific |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 909-440 | San Bernardino | Rialto, CA | O1 Communications |
| 909-441 | San Bernardino | Fontana, CA | T-mobile Usa |
| 909-443 | Citrix Communications LLC | ||
| 909-444 | Los Angeles | Diamond Bar, CA | Verizon California Inc.-ca (gte) |
| 909-445 | Los Angeles | Claremont, CA | Verizon California Inc.-ca (gte) |
| 909-446 | Riverside | Calimesa, CA | Verizon California Inc.-ca (gte) |
| 909-447 | Los Angeles | Claremont, CA | Verizon California Inc.-ca (gte) |
| 909-448 | Los Angeles | Claremont, CA | Verizon California Inc.-ca (gte) |
| 909-450 | Los Angeles | La Verne, CA | Pacific Bell - Clec |
| 909-451 | Los Angeles | La Verne, CA | Mci Worldcom Communications, Ca |
| 909-452 | San Bernardino | Fontana, CA | Sprint Spectrum L.p. |
| 909-453 | San Bernardino | San Bernardino, CA | Time Warner Cbl Info Svcs (ca) DBAtime Warner Cbl |
| 909-454 | San Bernardino | San Bernardino, CA | Metropcs Networks |
| 909-455 | Los Angeles | Pomona, CA | Mpower Communications Corp |
| 909-456 | San Bernardino | Ontario, CA | Tw Telecom Of California Lp |
| 909-457 | San Bernardino | Ontario, CA | Pac - West Telecomm |
| 909-458 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-459 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-460 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-461 | Los Angeles | Pomona, CA | O1 Communications |
There are 627 prefixes, In the code area, the major cities are Chino, CA;Chino Hills, CA;Claremont, CA;Colton, CA. The major city is Riverside.