| District of California area codes: 650 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | San Jose |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 650-200 | San Mateo | San Mateo, CA | O1 Communications |
| 650-201 | San Mateo | San Bruno, CA | Sprint Spectrum L.p. |
| 650-202 | San Mateo | San Mateo, CA | The Telephone Connection Local Services |
| 650-204 | San Francisco | San Francisco, CA | Tw Telecom Of California Lp |
| 650-205 | San Mateo | San Bruno, CA | Usa Mobility Wireless |
| 650-206 | San Mateo | Woodside, CA | Mpower Communications Corp |
| 650-207 | San Mateo | Redwood City, CA | Cellco Partnership DBA Verizon Wireless |
| 650-208 | San Mateo | Redwood City, CA | Cellco Partnership DBA Verizon Wireless |
| 650-209 | Santa Clara | San Jose, CA | U.s. Telepacific Corp. |
| 650-210 | Santa Clara | Mountain View, CA | Pacific Bell |
| 650-212 | San Mateo | San Mateo, CA | Pacific Bell |
| 650-213 | Santa Clara | Palo Alto, CA | Pacific Bell |
| 650-214 | Santa Clara | Mountain View, CA | Mci Worldcom Communications, Ca |
| 650-215 | Santa Clara | Mountain View, CA | Global Crossing Local Services-ca |
| 650-216 | San Mateo | Redwood City, CA | Pacific Bell |
| 650-217 | San Mateo | San Mateo, CA | Usa Mobility Wireless |
| 650-218 | San Mateo | Brisbane, CA | Sprint Spectrum L.p. |
| 650-219 | San Mateo | San Bruno, CA | Sprint Spectrum L.p. |
| 650-220 | San Mateo | San Mateo, CA | American Messaging (am) |
| 650-221 | San Mateo | Redwood City, CA | American Messaging Services |
There are 597 prefixes, In the code area, the major cities are Belmont, CA;Burlingame, CA;Daly City, CA;East Palo. The major city is San Jose.