FRONTIER CALIFORNIA INC.
75 prefixes in 626 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 626-239 | MONROVIA | 2319 | — | Yes |
| 626-256 | MONROVIA | 2319 | — | — |
| 626-301 | MONROVIA | 2319 | — | — |
| 626-303 | MONROVIA | 2319 | — | Yes |
| 626-305 | MONROVIA | 2319 | — | — |
| 626-306 | SIERRAMADR | 2319 | — | Yes |
| 626-330 | LA PUENTE | 2319 | — | — |
| 626-331 | COVINA | 2319 | — | — |
| 626-332 | COVINA | 2319 | — | — |
| 626-333 | LA PUENTE | 2319 | — | — |
| 626-334 | AZUSA | 2319 | — | — |
| 626-335 | AZUSA | 2319 | — | — |
| 626-336 | LA PUENTE | 2319 | — | — |
| 626-337 | COVINA | 2319 | — | — |
| 626-338 | COVINA | 2319 | — | — |
| 626-339 | COVINA | 2319 | — | — |
| 626-351 | SIERRAMADR | 2319 | — | — |
| 626-355 | SIERRAMADR | 2319 | — | — |
| 626-357 | MONROVIA | 2319 | — | — |
| 626-358 | MONROVIA | 2319 | — | — |
| 626-359 | MONROVIA | 2319 | — | — |
| 626-369 | LA PUENTE | 2319 | — | — |
| 626-472 | COVINA | 2319 | — | Yes |
| 626-480 | COVINA | 2319 | — | — |
| 626-581 | LA PUENTE | 2319 | — | Yes |
| 626-599 | MONROVIA | 2319 | — | Yes |
| 626-633 | AZUSA | 2319 | — | Yes |
| 626-732 | COVINA | 2319 | — | Yes |
| 626-810 | LA PUENTE | 2319 | — | — |
| 626-812 | AZUSA | 2319 | — | — |
| 626-813 | COVINA | 2319 | — | — |
| 626-814 | COVINA | 2319 | — | Yes |
| 626-815 | AZUSA | 2319 | — | Yes |
| 626-822 | SIERRAMADR | 2319 | — | Yes |
| 626-836 | SIERRAMADR | 2319 | — | Yes |
| 626-839 | LA PUENTE | 2319 | — | — |
| 626-848 | COVINA | 2319 | — | Yes |
| 626-850 | COVINA | 2319 | — | Yes |
| 626-851 | COVINA | 2319 | — | — |
| 626-852 | AZUSA | 2319 | — | — |
| 626-854 | LA PUENTE | 2319 | — | — |
| 626-855 | LA PUENTE | 2319 | — | — |
| 626-856 | COVINA | 2319 | — | Yes |
| 626-857 | AZUSA | 2319 | — | Yes |
| 626-858 | COVINA | 2319 | — | — |
| 626-859 | COVINA | 2319 | — | — |
| 626-910 | SNGBLCNN | 2319 | — | Yes |
| 626-912 | LA PUENTE | 2319 | — | — |
| 626-913 | LA PUENTE | 2319 | — | — |
| 626-914 | AZUSA | 2319 | — | — |
| 626-915 | COVINA | 2319 | — | — |
| 626-916 | COVINA | 2319 | — | Yes |
| 626-917 | COVINA | 2319 | — | — |
| 626-918 | COVINA | 2319 | — | — |
| 626-919 | COVINA | 2319 | — | — |
| 626-930 | MONROVIA | 2319 | — | — |
| 626-931 | COVINA | 2319 | — | Yes |
| 626-932 | MONROVIA | 2319 | — | — |
| 626-933 | LA PUENTE | 2319 | — | — |
| 626-934 | LA PUENTE | 2319 | — | — |
| 626-935 | LA PUENTE | 2319 | — | Yes |
| 626-937 | LA PUENTE | 2319 | — | Yes |
| 626-938 | COVINA | 2319 | — | Yes |
| 626-939 | COVINA | 2319 | — | Yes |
| 626-960 | COVINA | 2319 | — | — |
| 626-961 | LA PUENTE | 2319 | — | — |
| 626-962 | COVINA | 2319 | — | — |
| 626-963 | AZUSA | 2319 | — | — |
| 626-964 | LA PUENTE | 2319 | — | — |
| 626-965 | LA PUENTE | 2319 | — | — |
| 626-966 | COVINA | 2319 | — | — |
| 626-967 | COVINA | 2319 | — | — |
| 626-968 | LA PUENTE | 2319 | — | — |
| 626-969 | AZUSA | 2319 | — | — |
| 626-974 | COVINA | 2319 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.