All assignees
708 prefixes in 657 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 657-700 | — | — | ||
| 657-701 | GARDEN GRV | 649C | 2023-10-02 | Yes |
| 657-702 | ANAHEIM | 6006 | 2023-10-04 | Yes |
| 657-703 | HUNTITNBCH | 6006 | 2023-10-04 | Yes |
| 657-704 | HUNTITNBCH | 649C | 2023-10-04 | Yes |
| 657-705 | CYPRESS | 6529 | 2023-10-10 | Yes |
| 657-706 | FULLERTON | 6006 | 2023-10-13 | Yes |
| 657-707 | ANAHEIM | 6006 | 2023-10-20 | Yes |
| 657-708 | PLACENTIA | 6006 | 2023-11-02 | Yes |
| 657-709 | SANTA ANA | 6529 | 2023-12-04 | Yes |
| 657-710 | GARDEN GRV | 6529 | 2023-12-05 | Yes |
| 657-711 | MULT | — | — | |
| 657-712 | ANAHEIM | 7139 | 2023-12-15 | Yes |
| 657-713 | SANTA ANA | 939H | 2023-12-29 | Yes |
| 657-714 | BUENA PARK | 6529 | 2024-05-31 | Yes |
| 657-715 | SILVERADO | 6006 | 2023-12-27 | Yes |
| 657-716 | HUNTITNBCH | 6006 | 2024-01-25 | Yes |
| 657-717 | ANAHEIM | 6006 | 2024-01-29 | Yes |
| 657-718 | ANAHEIM | 6006 | 2024-02-02 | Yes |
| 657-719 | ANAHEIM | 6006 | 2024-02-20 | Yes |
| 657-720 | SANTA ANA | 394L | — | Yes |
| 657-721 | HUNTITNBCH | 6006 | 2024-02-20 | Yes |
| 657-722 | GARDEN GRV | 981E | — | Yes |
| 657-723 | ANAHEIM | 6006 | 2024-02-27 | Yes |
| 657-724 | ANAHEIM | 965H | 2020-09-21 | Yes |
| 657-725 | HUNTITNBCH | 6006 | 2024-02-27 | Yes |
| 657-726 | SILVERADO | 6006 | 2024-03-06 | Yes |
| 657-727 | ANAHEIM | 6006 | 2024-03-12 | Yes |
| 657-728 | HUNTITNBCH | 6006 | 2024-03-12 | Yes |
| 657-729 | SANTA ANA | 6006 | 2024-03-12 | Yes |
| 657-730 | ANAHEIM | 6006 | 2024-03-25 | Yes |
| 657-731 | ANAHEIM | 6529 | 2024-03-27 | Yes |
| 657-732 | SILVERADO | 965H | 2019-05-13 | Yes |
| 657-733 | HUNTITNBCH | 965H | 2020-09-21 | Yes |
| 657-734 | HUNTITNBCH | 6006 | 2024-03-27 | Yes |
| 657-735 | ANAHEIM | 6006 | 2024-03-28 | Yes |
| 657-736 | ANAHEIM | 6006 | 2024-04-04 | Yes |
| 657-737 | ANAHEIM | 6006 | 2024-04-09 | Yes |
| 657-738 | ORANGE | 6006 | 2024-04-09 | Yes |
| 657-739 | ANAHEIM | 6529 | 2021-11-15 | Yes |
| 657-740 | ANAHEIM | 6006 | 2024-04-25 | Yes |
| 657-741 | HUNTITNBCH | 6006 | 2024-04-25 | Yes |
| 657-742 | HUNTITNBCH | 516J | 2022-03-18 | Yes |
| 657-743 | CYPRESS | 6006 | 2024-05-08 | Yes |
| 657-744 | SANTA ANA | 965H | 2021-07-07 | Yes |
| 657-745 | ANAHEIM | 6006 | 2024-05-08 | Yes |
| 657-746 | WESTMINSTR | 516J | 2022-01-11 | Yes |
| 657-747 | HUNTITNBCH | 6006 | 2024-05-08 | Yes |
| 657-748 | ANAHEIM | 6006 | 2024-05-21 | Yes |
| 657-749 | FULLERTON | 6006 | 2024-05-21 | Yes |
| 657-750 | HUNTITNBCH | 6006 | 2024-05-21 | Yes |
| 657-751 | FULLERTON | 6529 | 2024-05-22 | Yes |
| 657-752 | ORANGE | 6529 | 2024-05-31 | Yes |
| 657-753 | ANAHEIM | 6006 | 2024-07-10 | Yes |
| 657-754 | GARDEN GRV | 6529 | 2024-07-30 | Yes |
| 657-755 | HUNTITNBCH | 965H | 2021-04-29 | Yes |
| 657-756 | HUNTITNBCH | 649C | 2022-11-08 | Yes |
| 657-757 | SANTA ANA | 6010 | 2020-09-23 | Yes |
| 657-758 | ANAHEIM | 965H | 2019-05-13 | Yes |
| 657-759 | BREA | 6010 | 2024-08-06 | Yes |
| 657-760 | HUNTITNBCH | 6529 | 2024-08-06 | Yes |
| 657-761 | ANAHEIM | 6006 | 2024-08-13 | Yes |
| 657-762 | CYPRESS | 6010 | 2024-08-13 | Yes |
| 657-763 | HUNTITNBCH | 6006 | 2024-08-16 | Yes |
| 657-764 | ANAHEIM | 6006 | 2024-08-20 | Yes |
| 657-765 | WESTMINSTR | 6010 | 2024-09-09 | Yes |
| 657-766 | SANTA ANA | 965H | 2019-05-13 | Yes |
| 657-767 | FULLERTON | 516J | 2022-01-11 | Yes |
| 657-768 | ANAHEIM | 6529 | 2024-09-12 | Yes |
| 657-769 | ANAHEIM | 6006 | 2024-09-17 | Yes |
| 657-770 | WESTMINSTR | 026K | 2022-06-09 | Yes |
| 657-771 | SANTA ANA | 6010 | 2024-09-20 | Yes |
| 657-772 | GARDEN GRV | 6006 | 2024-10-21 | Yes |
| 657-773 | HUNTITNBCH | 6529 | 2024-10-21 | Yes |
| 657-774 | ORANGE | 6529 | 2024-11-07 | Yes |
| 657-775 | ORANGE | 6010 | 2024-11-20 | Yes |
| 657-776 | ANAHEIM | 6529 | 2024-12-06 | Yes |
| 657-777 | CYPRESS | 981E | — | Yes |
| 657-778 | ANAHEIM | 6006 | 2024-12-19 | Yes |
| 657-779 | WESTMINSTR | 6010 | 2024-12-20 | Yes |
| 657-780 | ANAHEIM | 6006 | 2025-01-03 | Yes |
| 657-781 | HUNTITNBCH | 6006 | 2025-01-06 | Yes |
| 657-782 | ANAHEIM | 6006 | 2025-01-06 | Yes |
| 657-783 | YORBALINDA | 6010 | 2025-01-06 | Yes |
| 657-784 | SILVERADO | 6006 | 2025-01-10 | Yes |
| 657-785 | ANAHEIM | 6006 | 2025-01-13 | Yes |
| 657-786 | SANTA ANA | 965H | 2020-07-10 | Yes |
| 657-787 | HUNTITNBCH | 6006 | 2025-01-13 | Yes |
| 657-788 | SILVERADO | 965H | 2021-01-04 | Yes |
| 657-789 | ANAHEIM | 965H | 2021-02-17 | Yes |
| 657-790 | WESTMINSTR | 6006 | 2025-01-14 | Yes |
| 657-791 | ANAHEIM | 6006 | 2025-01-17 | Yes |
| 657-792 | HUNTITNBCH | 6006 | 2025-01-17 | Yes |
| 657-793 | FULLERTON | 6006 | 2025-01-22 | Yes |
| 657-794 | ANAHEIM | 6006 | 2025-01-22 | Yes |
| 657-795 | HUNTITNBCH | 6006 | 2025-01-22 | Yes |
| 657-796 | HUNTITNBCH | 6006 | 2025-01-28 | Yes |
| 657-797 | ANAHEIM | 6006 | 2025-01-28 | Yes |
| 657-798 | ANAHEIM | 6006 | 2025-02-12 | Yes |
| 657-799 | FULLERTON | 965H | 2020-07-10 | 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.