Local Calling Guide
Rate centre information
Diamond Bar, CA [Prefix detail]
LIR:
V: 09209 H: 07801
ILEC: 2319 FRONTIER CALIFORNIA INC.
Includes all or part of:
- Spadra, CA (2319 FRONTIER CALIFORNIA INC.)
- Walnut, CA (2319 FRONTIER CALIFORNIA INC.)
274 323 345 348 378 396 444 468 551 569 594 595 598 610 612 616 655 718 760 839 859 860 861 869 895 914 978 979
See all [Local Prefixes]
Local calling TO: [Reverse direction]
| OCN | Rate centre | Plan type | Call type | Monthly limit (minutes) | Note | Effective date |
|---|---|---|---|---|---|---|
| Anaheim, CA | ZUM3 | |||||
| Arcadia, CA | ZUM3 | |||||
| Azusa-Glendora, CA | ZUM2 | |||||
| Brea, CA | ZUM1 | |||||
| Buena Park, CA | ZUM3 | |||||
| Chino, CA | ZUM1 | |||||
| Claremont-San Dimas, CA | ZUM1 | |||||
| Covina-Baldwin Park, CA | ZUM1 | |||||
| El Monte, CA | ZUM3 | |||||
| Fullerton, CA | ZUM2 | |||||
| La Habra, CA | ZUM2 | |||||
| La Puente, CA | ZUM1 | |||||
| Monrovia, CA | ZUM3 | |||||
| Norwalk, CA | ZUM3 | |||||
| Ontario, CA | ZUM2 | |||||
| Pico Rivera, CA | ZUM3 | |||||
| Placentia, CA | ZUM1 | |||||
| Pomona, CA | ZUM1 | |||||
| San Gabriel Canyon, CA | ZUM3 | |||||
| Upland, CA | ZUM2 | |||||
| Whittier, CA | ZUM3 | |||||
| Yorba Linda, CA | ZUM2 |
*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: Wed, 18 Jun 2025 02:30:00 UTC
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