Local Calling Guide
Rate centre information
Clayton, CA [Prefix detail]
LIR:
V: 08451 H: 08641
276 304 524 567 672 673 690 693 844 889 914 993
See all [Local Prefixes]
Local calling TO: [Reverse direction]
| OCN | Rate centre | Plan type | Call type | Monthly limit (minutes) | Note | Effective date |
|---|---|---|---|---|---|---|
| Antioch, CA | ZUM2 | |||||
| Benicia, CA | ZUM3 | |||||
| Bishop Ranch, CA | ZUM3 | |||||
| Concord, CA | ZUM1 | |||||
| Danville, CA | ZUM2 | |||||
| Dublin-San Ramon, CA | ZUM3 | |||||
| East Contra Costa, CA | ZUM3 | |||||
| Lafayette, CA | ZUM2 | |||||
| Martinez, CA | ZUM2 | |||||
| Moraga, CA | ZUM3 | |||||
| Orinda, CA | ZUM3 | |||||
| Pittsburg, CA | ZUM1 | |||||
| Pittsburg West, CA | ZUM1 | |||||
| Walnut Creek, CA | ZUM1 |
*If OCN is blank, this indicates the default local calling area for all carriers. If OCN is not blank, then local calling is available for that OCN only.
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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