All assignees
442 prefixes in 831 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 831-658 | MONTEREY | 9740 | — | — |
| 831-659 | CARMEL VLY | 9740 | — | Yes |
| 831-661 | APTOS | 9740 | — | Yes |
| 831-662 | APTOS | 9740 | — | — |
| 831-663 | SALINAS | 9740 | — | Yes |
| 831-664 | HOLLISTER | 8826 | — | Yes |
| 831-665 | HOLLISTER | 8826 | — | Yes |
| 831-666 | WATSONVL | 649C | — | Yes |
| 831-667 | BIG SUR | 9740 | — | Yes |
| 831-673 | HOLLISTER | 6010 | — | Yes |
| 831-674 | GREENFIELD | 9740 | — | Yes |
| 831-675 | GONZALES | 9740 | — | Yes |
| 831-676 | SALINAS | 7421 | 2002-08-30 | Yes |
| 831-677 | SOLEDAD | 7379 | — | Yes |
| 831-678 | SOLEDAD | 9740 | — | — |
| 831-679 | CHUALAR | 9740 | — | Yes |
| 831-682 | SALINAS | 6006 | 2001-03-09 | — |
| 831-684 | APTOS | 9740 | — | Yes |
| 831-685 | APTOS | 9740 | — | — |
| 831-687 | APTOS | 9740 | — | Yes |
| 831-688 | APTOS | 9740 | — | — |
| 831-689 | APTOS | 9740 | — | Yes |
| 831-693 | IDRIA | 2346 | — | — |
| 831-699 | FELTON | 965H | 2020-12-21 | Yes |
| 831-700 | — | — | ||
| 831-703 | BOULDERCRK | 7718 | — | Yes |
| 831-704 | FELTON | 649C | — | Yes |
| 831-705 | CHUALAR | 671J | 2002-03-13 | Yes |
| 831-706 | SANTA CRUZ | 7718 | — | Yes |
| 831-707 | WATSONVL | 7718 | — | Yes |
| 831-708 | APTOS | 981E | — | Yes |
| 831-709 | BEN LOMOND | 8826 | — | Yes |
| 831-710 | SALINAS | 6010 | 2002-04-12 | Yes |
| 831-711 | XXXXXXXXXX | MULT | — | — |
| 831-713 | SANTA CRUZ | 6006 | — | Yes |
| 831-714 | — | — | ||
| 831-717 | MONTEREY | 506J | — | Yes |
| 831-718 | MONTEREY | 7240 | 2005-08-16 | Yes |
| 831-722 | WATSONVL | 9740 | — | — |
| 831-724 | WATSONVL | 9740 | — | — |
| 831-726 | WATSONVL | 9740 | — | Yes |
| 831-728 | WATSONVL | 9740 | — | — |
| 831-731 | CASTROVL | 515J | — | Yes |
| 831-732 | SAN ARDO | 8826 | — | Yes |
| 831-737 | SALINAS | 671J | 2006-03-28 | Yes |
| 831-740 | WATSONVL | 7145 | — | Yes |
| 831-741 | CASTROVL | 8826 | — | Yes |
| 831-744 | GONZALES | 6006 | — | Yes |
| 831-747 | MONTEREY | 516C | 2005-04-06 | Yes |
| 831-750 | WATSONVL | 6529 | — | Yes |
| 831-751 | SALINAS | 9740 | — | — |
| 831-753 | SALINAS | 9740 | — | — |
| 831-754 | SALINAS | 9740 | — | — |
| 831-755 | SALINAS | 9740 | — | — |
| 831-756 | SALINAS | 9262 | 2005-09-12 | Yes |
| 831-757 | SALINAS | 9740 | — | — |
| 831-758 | SALINAS | 9740 | — | — |
| 831-759 | SALINAS | 9740 | — | — |
| 831-760 | MONTEREY | 5562 | — | Yes |
| 831-761 | WATSONVL | 9740 | — | — |
| 831-763 | WATSONVL | 9740 | — | — |
| 831-766 | SALINAS | 9740 | — | — |
| 831-768 | WATSONVL | 9740 | — | — |
| 831-769 | SALINAS | 9740 | — | Yes |
| 831-770 | SALINAS | 9740 | — | Yes |
| 831-771 | SALINAS | 9740 | — | — |
| 831-772 | SALINAS | 9740 | — | — |
| 831-774 | GONZALES | 5562 | — | Yes |
| 831-775 | SALINAS | 9740 | — | Yes |
| 831-776 | SALINAS | 5562 | 2001-07-12 | Yes |
| 831-777 | SANTA CRUZ | 649C | 2015-08-17 | Yes |
| 831-778 | SAN LUCAS | 8826 | — | Yes |
| 831-783 | SALINAS | 9740 | — | Yes |
| 831-784 | SALINAS | 9740 | — | Yes |
| 831-785 | SALINAS | 5562 | — | Yes |
| 831-786 | WATSONVL | 9740 | — | Yes |
| 831-788 | SALINAS | 965H | 2022-05-31 | Yes |
| 831-789 | SALINAS | 7379 | — | Yes |
| 831-794 | SALINAS | 5562 | 2001-09-13 | Yes |
| 831-796 | SALINAS | 9740 | — | Yes |
| 831-800 | SALINAS | 622J | — | Yes |
| 831-801 | HOLLISTER | 6006 | — | — |
| 831-805 | SANTA CRUZ | — | — | |
| 831-808 | SOLEDAD | 624H | 2023-12-06 | Yes |
| 831-809 | SALINAS | 6006 | — | — |
| 831-811 | XXXXXXXXXX | MULT | — | — |
| 831-818 | SANTA CRUZ | 6006 | — | — |
| 831-821 | TRES PINOS | 6006 | — | Yes |
| 831-824 | SANTA CRUZ | 7145 | — | Yes |
| 831-828 | — | — | ||
| 831-830 | KING CITY | 649C | 2020-07-24 | Yes |
| 831-831 | — | — | ||
| 831-833 | HOLLISTER | 939H | 2022-02-24 | Yes |
| 831-837 | SALINAS | 516J | 2022-01-10 | Yes |
| 831-840 | WATSONVL | 6010 | — | Yes |
| 831-842 | APTOS | 965H | 2021-11-21 | Yes |
| 831-844 | BIG SUR | 516J | — | Yes |
| 831-850 | FELTON | 649C | — | Yes |
| 831-851 | WATSONVL | 649C | — | — |
| 831-854 | SANTA CRUZ | 7379 | — | Yes |
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.