| District of California area codes: 909 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Riverside |
| Time Zone | Pacific |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 909-635 | San Bernardino | Ontario, CA | Mpower Communications Corp |
| 909-636 | San Bernardino | Chino, CA | Sprint Spectrum L.p. |
| 909-638 | San Bernardino | Ontario, CA | Cellco Partnership DBA Verizon Wireless |
| 909-641 | San Bernardino | Fontana, CA | New Cingular Wireless PCS |
| 909-643 | Los Angeles | Pomona, CA | Metropcs Networks |
| 909-644 | San Bernardino | Rialto, CA | Level 3 Communications |
| 909-645 | San Bernardino | Colton, CA | New Cingular Wireless PCS |
| 909-646 | Riverside | Riverside, CA | Tw Telecom Of California Lp |
| 909-647 | San Bernardino | Highland, CA | O1 Communications |
| 909-648 | San Bernardino | San Bernardino, CA | Sprint Spectrum L.p. |
| 909-649 | San Bernardino | Highland, CA | Pacific Bell |
| 909-650 | San Bernardino | San Bernardino, CA | 33 Wireless Inc. |
| 909-651 | San Bernardino | Redlands, CA | Tw Telecom Of California Lp |
| 909-652 | San Bernardino | Upland, CA | Charter Fiberlink Ca-cco |
| 909-653 | San Bernardino | Colton, CA | Xo California |
| 909-657 | San Bernardino | Ontario, CA | Broadwing Communications |
| 909-658 | San Bernardino | San Bernardino, CA | Broadwing Communications |
| 909-659 | San Bernardino | San Bernardino, CA | Sprint Spectrum L.p. |
| 909-660 | San Bernardino | Upland, CA | Cellco Partnership DBA Verizon Wireless |
| 909-661 | San Bernardino | Ontario, CA | North County Communications Corp. |
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.