Local Calling Guide
Rate centre information
East Contra Costa, CA [Prefix detail]
LIR:
V: 08448 H: 08600
Includes all or part of:
- Bethel Island, CA (9740 PACIFIC BELL)
- Brentwood, CA (9740 PACIFIC BELL)
- Byron, CA (9740 PACIFIC BELL)
- Discovery Bay, CA (9740 PACIFIC BELL)
- Knightsen, CA (9740 PACIFIC BELL)
- Oakley, CA (9740 PACIFIC BELL)
240 306 308 390 392 418 420 450 508 513 516 559 578 625 626 634 666 679 684 809 832 880
See all [Local Prefixes]
Local calling TO 4 exchanges: [Reverse direction]
| Rate centre | Plan type | Call type | Monthly limit (minutes) | Note | Effective date |
|---|---|---|---|---|---|
| Antioch, CA | ZUM1 | ||||
| Clayton, CA | ZUM3 | ||||
| Pittsburg, CA | ZUM3 | ||||
| Pittsburg West, CA | ZUM3 |
Last updated: Thu, 05 Feb 2026 23:41:55 UTC
Sponsored by: Execulink Telecom
Like this site? We accept donations via PayPal.