All assignees
639 prefixes in 517 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 517-543 | CHARLOTTE | 9323 | — | — |
| 517-544 | JACKSON | 2550 | 2002-08-12 | — |
| 517-545 | HOWELL | 9323 | — | — |
| 517-546 | HOWELL | 9323 | — | — |
| 517-547 | ADDISON | 0681 | — | Yes |
| 517-548 | HOWELL | 9323 | — | — |
| 517-549 | MOSHERVL | 0671 | — | — |
| 517-550 | DIMONDALE | 543C | 2018-08-22 | Yes |
| 517-551 | FOWLERVL | 5562 | 2023-03-16 | Yes |
| 517-552 | HOWELL | 9323 | — | — |
| 517-553 | HOWELL | 5562 | 2021-09-29 | Yes |
| 517-554 | ALBION | 6003 | 2002-09-16 | Yes |
| 517-555 | DIR ASST | MULT | — | — |
| 517-557 | BRITTON | 624H | 2021-05-19 | Yes |
| 517-563 | HANOVER | 4417 | — | — |
| 517-564 | ADRIAN | 6630 | — | — |
| 517-565 | FITCHBURG | 0681 | — | Yes |
| 517-566 | SUNFIELD | 0671 | — | Yes |
| 517-567 | RANSOM | 4417 | — | — |
| 517-568 | HOMER | 0681 | — | Yes |
| 517-569 | RIVES JCT | 0681 | — | Yes |
| 517-571 | HOWELL | 6630 | — | — |
| 517-574 | LANSING | 046L | 2008-04-10 | Yes |
| 517-575 | LANSING | 9323 | — | Yes |
| 517-577 | ADRIAN | 318J | — | Yes |
| 517-579 | HOWELL | 6120 | — | Yes |
| 517-580 | LANSING | 6120 | — | Yes |
| 517-581 | JACKSON | 6003 | — | — |
| 517-582 | LANSING | 6003 | — | Yes |
| 517-583 | TEKONSHA | 6120 | 2002-08-19 | Yes |
| 517-584 | ALBION | 2550 | 2002-08-12 | — |
| 517-586 | HOWELL | 829J | — | Yes |
| 517-587 | LANSING | 883K | 2026-06-02 | Yes |
| 517-588 | CHARLOTTE | 2964 | 2002-06-25 | Yes |
| 517-589 | LESLIE | 9323 | — | Yes |
| 517-592 | BROOKLYN | 4417 | — | — |
| 517-594 | OSSEO | 3535 | 2002-06-19 | Yes |
| 517-595 | WALDRON | 558A | 2002-06-18 | Yes |
| 517-596 | MUNITH | 0681 | — | Yes |
| 517-597 | SUNFIELD | 3535 | 2002-06-18 | Yes |
| 517-599 | LANSING | 6003 | — | — |
| 517-600 | DIMONDALE | 7157 | 2005-10-17 | Yes |
| 517-604 | MASON | 6003 | 2002-08-19 | Yes |
| 517-605 | ADRIAN | 2964 | — | Yes |
| 517-606 | BLISSFIELD | 3459 | — | — |
| 517-607 | HILLSDALE | 9323 | — | Yes |
| 517-609 | JONESVILLE | 2550 | 2002-08-12 | — |
| 517-610 | HILLSDALE | 2964 | 2002-06-26 | Yes |
| 517-611 | XXXXXXXXXX | MULT | — | — |
| 517-612 | JACKSON | 2964 | 2002-04-25 | Yes |
| 517-614 | LANSING | 6003 | 2002-09-17 | — |
| 517-615 | VERMONTVL | 6534 | 2002-05-20 | Yes |
| 517-616 | DIMONDALE | 543C | 2008-10-28 | Yes |
| 517-617 | COLDWATER | 6534 | — | — |
| 517-618 | HOWELL | 6120 | — | Yes |
| 517-619 | LANSING | 770E | 2017-10-11 | Yes |
| 517-621 | MUNITH | 817J | 2002-04-22 | — |
| 517-622 | GRANDLEDGE | 0695 | — | Yes |
| 517-623 | DANSVILLE | 9323 | — | Yes |
| 517-624 | DE WITT | 543C | 2006-05-24 | Yes |
| 517-625 | PERRY | 0726 | — | Yes |
| 517-626 | GRANDLEDGE | 0695 | — | Yes |
| 517-627 | GRANDLEDGE | 0695 | — | — |
| 517-628 | ONONDAGA | 0681 | — | Yes |
| 517-629 | ALBION | 9323 | — | — |
| 517-630 | ALBION | 9323 | — | Yes |
| 517-631 | WEBBERVL | 817J | 2002-03-27 | — |
| 517-633 | ADRIAN | 622J | 2021-09-03 | Yes |
| 517-634 | FITCHBURG | 817J | 2002-04-22 | — |
| 517-636 | LANSING | 9323 | 2001-11-28 | — |
| 517-639 | QUINCY | 0695 | — | Yes |
| 517-641 | BATH | 0695 | — | Yes |
| 517-642 | MUNITH | 2550 | 2002-08-12 | — |
| 517-643 | LANSING | 6003 | 2001-11-27 | Yes |
| 517-645 | POTTERVL | 9323 | — | Yes |
| 517-646 | DIMONDALE | 9323 | — | Yes |
| 517-647 | PORTLAND | 9323 | — | Yes |
| 517-648 | LANSING | 6003 | — | — |
| 517-649 | MULLIKEN | 9323 | — | Yes |
| 517-651 | LAINGSBURG | 0695 | — | Yes |
| 517-652 | CHARLOTTE | 2964 | 2001-12-27 | Yes |
| 517-653 | BURLINGTON | 817J | 2002-04-22 | — |
| 517-654 | ALBION | 817J | 2001-11-13 | — |
| 517-655 | WILLIAMSTN | 0695 | — | — |
| 517-657 | LANSING | 318J | — | Yes |
| 517-658 | READING | 817J | 2002-03-27 | — |
| 517-659 | ADDISON | 817J | 2002-01-25 | — |
| 517-662 | ADRIAN | 6003 | 2010-11-10 | Yes |
| 517-663 | EATON RPD | 9323 | — | — |
| 517-664 | LANSING | 9323 | — | Yes |
| 517-666 | GRANDLEDGE | 543C | 2017-11-21 | Yes |
| 517-667 | CHARLOTTE | 6003 | 2002-03-29 | Yes |
| 517-668 | DE WITT | 0695 | — | Yes |
| 517-669 | DE WITT | 0695 | — | — |
| 517-671 | TEKONSHA | 817J | 2002-04-22 | — |
| 517-672 | HOWELL | 2964 | 2002-06-26 | Yes |
| 517-673 | ADRIAN | 2964 | 2002-08-13 | Yes |
| 517-675 | SHAFTSBURG | 0726 | — | Yes |
| 517-676 | MASON | 9323 | — | — |
| 517-677 | COLDWATER | 2964 | 2002-09-03 | 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.