FRONTIER CALIFORNIA INC.
158 prefixes in 562 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 562-809 | NORWALK | 2319 | — | — |
| 562-856 | ALAMITOS | 2319 | — | Yes |
| 562-860 | NORWALK | 2319 | — | — |
| 562-861 | DOWNEY | 2319 | — | — |
| 562-862 | DOWNEY | 2319 | — | — |
| 562-863 | NORWALK | 2319 | — | — |
| 562-864 | NORWALK | 2319 | — | — |
| 562-865 | NORWALK | 2319 | — | — |
| 562-866 | NORWALK | 2319 | — | — |
| 562-867 | NORWALK | 2319 | — | — |
| 562-868 | NORWALK | 2319 | — | — |
| 562-869 | DOWNEY | 2319 | — | — |
| 562-901 | LONG BEACH | 2319 | — | — |
| 562-902 | LA HABRA | 2319 | — | — |
| 562-903 | WHITTIER | 2319 | — | — |
| 562-904 | DOWNEY | 2319 | — | — |
| 562-905 | LA HABRA | 2319 | — | Yes |
| 562-906 | WHITTIER | 2319 | — | — |
| 562-907 | WHITTIER | 2319 | — | Yes |
| 562-908 | PICORIVERA | 2319 | — | — |
| 562-916 | NORWALK | 2319 | — | Yes |
| 562-920 | NORWALK | 2319 | — | — |
| 562-921 | NORWALK | 2319 | — | — |
| 562-922 | DOWNEY | 2319 | — | Yes |
| 562-923 | DOWNEY | 2319 | — | — |
| 562-924 | NORWALK | 2319 | — | — |
| 562-925 | NORWALK | 2319 | — | — |
| 562-926 | NORWALK | 2319 | — | — |
| 562-927 | DOWNEY | 2319 | — | — |
| 562-928 | DOWNEY | 2319 | — | — |
| 562-929 | NORWALK | 2319 | — | — |
| 562-930 | ALAMITOS | 2319 | — | — |
| 562-933 | LONG BEACH | 2319 | — | — |
| 562-936 | ALAMITOS | 2319 | — | Yes |
| 562-938 | LAKEWOOD | 2319 | — | — |
| 562-940 | DOWNEY | 2319 | — | Yes |
| 562-941 | WHITTIER | 2319 | — | — |
| 562-942 | PICORIVERA | 2319 | — | — |
| 562-943 | LA HABRA | 2319 | — | — |
| 562-944 | WHITTIER | 2319 | — | — |
| 562-945 | WHITTIER | 2319 | — | — |
| 562-946 | WHITTIER | 2319 | — | — |
| 562-947 | LA HABRA | 2319 | — | — |
| 562-948 | PICORIVERA | 2319 | — | — |
| 562-949 | PICORIVERA | 2319 | — | — |
| 562-951 | LONG BEACH | 2319 | — | — |
| 562-961 | ALAMITOS | 2319 | — | Yes |
| 562-980 | LONG BEACH | 2319 | — | Yes |
| 562-981 | LONG BEACH | 2319 | — | Yes |
| 562-982 | LAKEWOOD | 2319 | — | Yes |
| 562-983 | LONG BEACH | 2319 | — | — |
| 562-984 | LONG BEACH | 2319 | — | — |
| 562-985 | ALAMITOS | 2319 | — | — |
| 562-986 | ALAMITOS | 2319 | — | Yes |
| 562-987 | ALAMITOS | 2319 | — | — |
| 562-988 | LONG BEACH | 2319 | — | — |
| 562-989 | LONG BEACH | 2319 | — | — |
| 562-997 | LONG BEACH | 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.