(510) 278
Prefix in HAYWARD, California
Prefix Details
| Area Code | 510 |
| Prefix | 278 |
| Full Number Pattern | (510) 278-XXXX |
| Rate Center | HAYWARD |
| State | California |
| Operating Company | PACIFIC BELL |
| Time Zone | Pacific (PT, UTC-8) |
About the (510) 278 Prefix
The (510) 278 prefix is assigned to PACIFIC BELL and serves the HAYWARD rate center in California. Phone numbers with this prefix are in the Pacific Time Zone and are part of area code 510 which covers Oakland and surrounding areas.