Diablo Area Code
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Diablo, CA area code
Diablo, CA is served by area code 925. This area code was initially assigned on 19-MAY-97 and has been in continuous service since 14-MAR-98, supporting the city's growing communication needs over the years.
| City Name | Diablo, CA |
| Area Code | 925 |
| State | California |
| Country | United State |
| Time Zone | Pacific Standard Time (PST) |
| Code Type | General Purpose Code |
| In Service | Yes |
| Assignment Date | 19-MAY-97 |
| In Service Date | 14-MAR-98 |
