(628) 257
Prefix in MILLVALLEY, California
Prefix Details
| Area Code | 628 |
| Prefix | 257 |
| Full Number Pattern | (628) 257-XXXX |
| Rate Center | MILLVALLEY |
| State | California |
| Operating Company | RACE TELECOMMUNICATIONS, INC. - CA |
| Time Zone | Pacific (PT, UTC-8) |
About the (628) 257 Prefix
The (628) 257 prefix is assigned to RACE TELECOMMUNICATIONS, INC. - CA and serves the MILLVALLEY rate center in California. Phone numbers with this prefix are in the Pacific Time Zone and are part of area code 628 which covers San Francisco and surrounding areas.