| District of California area codes: 909 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Riverside |
| Time Zone | Pacific |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 909-915 | San Bernardino | San Bernardino, CA | Teleport Communications Group - Los Angeles |
| 909-917 | San Bernardino | Ontario, CA | Sprint Spectrum L.p. |
| 909-918 | Riverside | Calimesa, CA | Tw Telecom Of California Lp |
| 909-919 | San Bernardino | Upland, CA | Pacific Bell - Clec |
| 909-920 | San Bernardino | Upland, CA | Verizon California Inc.-ca (gte) |
| 909-921 | San Bernardino | Upland, CA | Verizon California Inc.-ca (gte) |
| 909-922 | San Bernardino | Etiwanda, CA | Xo California |
| 909-923 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-927 | San Bernardino | Chino, CA | Metropcs Networks |
| 909-929 | Los Angeles | Covina, CA | Time Warner Cbl Info Svcs (ca) DBAtime Warner Cbl |
| 909-930 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-931 | San Bernardino | Upland, CA | Verizon California Inc.-ca (gte) |
| 909-932 | San Bernardino | Upland, CA | Verizon California Inc.-ca (gte) |
| 909-933 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-934 | San Bernardino | Ontario, CA | 33 Wireless Inc. |
| 909-935 | San Bernardino | Ontario, CA | Pac - West Telecomm |
| 909-936 | Riverside | Riverside, CA | Cellco Partnership DBA Verizon Wireless |
| 909-937 | San Bernardino | Ontario, CA | Verizon California Inc.-ca (gte) |
| 909-938 | San Bernardino | Ontario, CA | Cellco Partnership DBA Verizon Wireless |
| 909-939 | San Bernardino | Highland, CA | Level 3 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.