All assignees
510 prefixes in 385 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 385-500 | SALT LAKE | 965H | 2019-01-24 | Yes |
| 385-501 | SALT LAKE | 117F | 2018-06-20 | Yes |
| 385-502 | KAYSVILLE | 6571 | 2021-10-14 | Yes |
| 385-503 | BOUNTIFUL | 871E | 2021-11-10 | Yes |
| 385-504 | KAYSVILLE | 6010 | 2022-12-06 | Yes |
| 385-505 | PROVO | 6571 | 2017-06-08 | Yes |
| 385-506 | MIDVALE | 6010 | 2022-12-06 | Yes |
| 385-507 | SALT LAKE | 6010 | 2022-12-06 | Yes |
| 385-508 | SALT LAKE | 6529 | 2022-12-07 | Yes |
| 385-509 | SALT LAKE | 117F | 2022-12-09 | Yes |
| 385-510 | LEHI | 6010 | 2022-12-23 | Yes |
| 385-511 | MULT | — | — | |
| 385-512 | KAYSVILLE | 6529 | 2023-01-05 | Yes |
| 385-513 | MURRAY | 6010 | 2023-01-07 | Yes |
| 385-514 | OGDEN | 6529 | 2023-01-26 | Yes |
| 385-515 | KAYSVILLE | 6529 | 2016-11-01 | Yes |
| 385-516 | ALTA | 6571 | 2023-02-03 | Yes |
| 385-517 | KAYSVILLE | 6010 | 2023-03-09 | Yes |
| 385-518 | SALT LAKE | 6010 | 2023-03-09 | Yes |
| 385-519 | CLEARFIELD | 5562 | 2014-07-07 | Yes |
| 385-520 | SALT LAKE | 732J | 2023-03-10 | Yes |
| 385-521 | SPANIHFORK | 6010 | 2023-04-03 | Yes |
| 385-522 | SALT LAKE | 508J | 2017-12-19 | Yes |
| 385-523 | AMERCNFORK | 6010 | 2023-04-10 | Yes |
| 385-524 | KAYSVILLE | 516J | 2021-03-15 | Yes |
| 385-525 | SALT LAKE | 871E | 2023-02-22 | Yes |
| 385-526 | CLEARFIELD | 516J | 2022-02-24 | Yes |
| 385-527 | PAYSON | 871E | 2023-04-11 | Yes |
| 385-528 | SALT LAKE | 6529 | 2014-03-31 | Yes |
| 385-529 | MIDVALE | 6010 | 2015-06-19 | Yes |
| 385-530 | SALT LAKE | 6010 | 2023-04-13 | Yes |
| 385-531 | SALT LAKE | 3231 | 2023-05-04 | Yes |
| 385-532 | KAYSVILLE | 6010 | 2023-05-05 | Yes |
| 385-533 | CLEARFIELD | 939H | 2022-09-23 | Yes |
| 385-534 | MIDVALE | 871E | 2023-05-31 | Yes |
| 385-535 | PROVO | 6010 | — | Yes |
| 385-536 | SALT LAKE | 6010 | 2023-06-09 | Yes |
| 385-537 | AMERCNFORK | 6010 | 2023-06-09 | Yes |
| 385-538 | AMERCNFORK | 871E | 2023-01-20 | Yes |
| 385-539 | PROVO | 6529 | 2014-08-29 | Yes |
| 385-540 | AMERCNFORK | 6010 | 2023-06-12 | Yes |
| 385-541 | SALT LAKE | 871E | 2023-06-22 | Yes |
| 385-542 | MURRAY | 871E | 2023-06-22 | Yes |
| 385-543 | SPRINGVL | 871E | 2023-06-22 | Yes |
| 385-544 | KAYSVILLE | 871E | 2023-06-22 | Yes |
| 385-545 | OGDEN | 871E | 2023-06-26 | Yes |
| 385-546 | PLEASATGRV | 871E | 2023-06-26 | Yes |
| 385-547 | SALT LAKE | 6010 | 2023-08-01 | Yes |
| 385-548 | SALT LAKE | 6010 | 2023-08-01 | Yes |
| 385-549 | SALT LAKE | 5727 | 2014-10-09 | Yes |
| 385-550 | BOUNTIFUL | 871E | 2023-08-09 | Yes |
| 385-551 | MURRAY | 6010 | 2023-09-06 | Yes |
| 385-552 | KAYSVILLE | 6529 | 2019-04-11 | Yes |
| 385-553 | MORGAN | 871E | 2023-09-14 | Yes |
| 385-554 | MIDVALE | 871E | 2023-09-14 | Yes |
| 385-555 | DIR ASST | MULT | — | — |
| 385-556 | MIDVALE | 6010 | 2023-10-05 | Yes |
| 385-557 | MIDVALE | 318J | 2015-11-02 | Yes |
| 385-558 | CLEARFIELD | 939H | 2023-11-27 | Yes |
| 385-559 | KAYSVILLE | 939H | 2023-11-27 | Yes |
| 385-560 | MURRAY | 6529 | 2023-11-30 | Yes |
| 385-561 | OGDEN | 598J | 2023-12-01 | Yes |
| 385-562 | BOUNTIFUL | 7421 | 2023-12-21 | Yes |
| 385-563 | SALT LAKE | 516J | 2022-01-27 | Yes |
| 385-564 | SALT LAKE | 598J | 2023-12-27 | Yes |
| 385-565 | AMERCNFORK | 6010 | 2024-01-30 | Yes |
| 385-566 | KAYSVILLE | 516J | 2022-01-27 | Yes |
| 385-567 | PROVO | 965H | 2021-08-25 | Yes |
| 385-568 | KAYSVILLE | 871E | 2024-02-13 | Yes |
| 385-569 | AMERCNFORK | 6010 | 2024-02-12 | Yes |
| 385-570 | MIDVALE | 871E | 2024-02-13 | Yes |
| 385-571 | KAYSVILLE | 6010 | 2024-02-21 | Yes |
| 385-572 | KAYSVILLE | 6010 | 2024-02-21 | Yes |
| 385-573 | SALT LAKE | 871E | 2024-03-13 | Yes |
| 385-574 | LEHI | 6010 | 2024-03-18 | Yes |
| 385-575 | PROVO | 6571 | 2024-03-22 | Yes |
| 385-576 | MURRAY | 624H | 2024-04-11 | Yes |
| 385-577 | KAYSVILLE | 871E | 2024-03-29 | Yes |
| 385-578 | SALT LAKE | 871E | 2024-04-10 | Yes |
| 385-579 | AMERCNFORK | 6010 | 2024-04-23 | Yes |
| 385-580 | MURRAY | 6529 | 2024-05-01 | Yes |
| 385-581 | SALT LAKE | 6529 | 2024-06-12 | Yes |
| 385-582 | PROVO | 871E | 2024-06-17 | Yes |
| 385-583 | MIDVALE | 871E | 2022-11-08 | Yes |
| 385-584 | SALT LAKE | 490J | 2024-06-27 | Yes |
| 385-585 | PROVO | 871E | 2022-10-10 | Yes |
| 385-586 | MIDVALE | 6010 | 2024-07-19 | Yes |
| 385-587 | SPNSFKCNYN | 490J | 2024-07-23 | Yes |
| 385-588 | MURRAY | 6529 | 2024-07-30 | Yes |
| 385-589 | MURRAY | 6529 | 2024-08-30 | Yes |
| 385-590 | MURRAY | 6529 | 2024-10-09 | Yes |
| 385-591 | CLEARFIELD | 7530 | 2024-10-14 | Yes |
| 385-592 | SALT LAKE | 6010 | 2024-12-02 | Yes |
| 385-593 | SALT LAKE | 871E | 2024-12-12 | Yes |
| 385-594 | CLEARFIELD | 7530 | 2025-01-17 | Yes |
| 385-595 | SPRINGVL | 871E | 2020-11-04 | Yes |
| 385-596 | KAYSVILLE | 871E | 2025-02-05 | Yes |
| 385-597 | SPANIHFORK | 871E | 2025-02-12 | Yes |
| 385-598 | MURRAY | 6529 | 2025-02-19 | Yes |
| 385-599 | PAYSON | 871E | 2025-03-18 | 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.