All assignees
524 prefixes in 810 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 810-591 | FLINT | 829J | — | — |
| 810-592 | SANDUSKY | 7279 | — | Yes |
| 810-593 | FENTON | 829J | — | Yes |
| 810-595 | BRIGHTON | 9748 | — | — |
| 810-597 | FLINT | 7279 | — | Yes |
| 810-599 | BRIGHTON | 6003 | — | — |
| 810-600 | FLINT | 829J | 2002-04-12 | — |
| 810-602 | SOUTHFIELD | 2964 | — | Yes |
| 810-603 | GRANDBLANC | 9323 | — | Yes |
| 810-605 | FLUSHING | 829J | — | Yes |
| 810-606 | GRANDBLANC | 9323 | — | — |
| 810-610 | FLINT | 2964 | — | Yes |
| 810-611 | XXXXXXXXXX | MULT | — | — |
| 810-614 | LAPEER | 2964 | — | Yes |
| 810-616 | FENTON | 817J | 2002-03-27 | — |
| 810-617 | OTISVILLE | 516J | 2022-02-18 | Yes |
| 810-618 | FLINT | 6003 | 2002-01-16 | — |
| 810-620 | FLINT | 2964 | 2010-03-29 | Yes |
| 810-621 | LENNON | 0708 | — | — |
| 810-622 | PT SANILAC | 9323 | — | Yes |
| 810-623 | BRIGHTON | 6003 | 2001-10-18 | — |
| 810-624 | FLINT | 6534 | 2001-03-07 | Yes |
| 810-625 | FLINT | 2964 | 2002-04-23 | Yes |
| 810-626 | BRIGHTON | 6120 | — | Yes |
| 810-627 | IMLAY CITY | 2964 | 2002-06-26 | Yes |
| 810-628 | SWARTZ CRK | 0695 | — | Yes |
| 810-629 | FENTON | 9323 | — | — |
| 810-630 | SWARTZ CRK | 0695 | — | Yes |
| 810-631 | OTISVILLE | 0695 | — | Yes |
| 810-632 | HARTLAND | 9323 | — | Yes |
| 810-633 | APPLEGATE | 9323 | — | Yes |
| 810-634 | NEWLOTHROP | 993L | 2012-10-24 | Yes |
| 810-635 | SWARTZ CRK | 0695 | — | — |
| 810-636 | GOODRICH | 0671 | — | Yes |
| 810-637 | ST CLAIR | 6120 | — | Yes |
| 810-638 | NEWLOTHROP | 0671 | — | Yes |
| 810-639 | MONTROSE | 0671 | — | — |
| 810-640 | CLIMTMORRS | 9323 | — | Yes |
| 810-641 | SNOVER | 770E | — | Yes |
| 810-642 | SMITHS CRK | 770E | — | Yes |
| 810-643 | MARINECITY | 829J | 2002-05-20 | Yes |
| 810-644 | SWARTZ CRK | 770E | — | Yes |
| 810-645 | PT SANILAC | 829J | — | Yes |
| 810-646 | GOODELLS | 516J | 2022-03-03 | Yes |
| 810-648 | SANDUSKY | 9323 | — | Yes |
| 810-650 | PORT HURON | 2964 | — | Yes |
| 810-652 | DAVISON | 0695 | — | Yes |
| 810-653 | DAVISON | 0695 | — | — |
| 810-654 | DAVISON | 0695 | — | Yes |
| 810-655 | RANKIN | 0695 | — | Yes |
| 810-656 | LAPEER | 2964 | 2002-10-03 | Yes |
| 810-657 | CARSONVL | 9323 | — | Yes |
| 810-658 | DAVISON | 0695 | — | — |
| 810-659 | FLUSHING | 9323 | — | — |
| 810-660 | LAPEER | 9714 | — | Yes |
| 810-661 | FLINT | 9748 | — | — |
| 810-662 | PORT HURON | 991E | 2013-05-20 | Yes |
| 810-664 | LAPEER | 9323 | — | — |
| 810-666 | FLINT | 543C | 2017-10-06 | Yes |
| 810-667 | LAPEER | 9323 | — | — |
| 810-669 | CAPAC | 770E | 2001-10-18 | Yes |
| 810-670 | CLIMTMORRS | 829J | — | Yes |
| 810-671 | ALGONAC | 770E | — | Yes |
| 810-672 | SNOVER | 9323 | — | Yes |
| 810-673 | ALMONT | 770E | — | Yes |
| 810-674 | APPLEGATE | 770E | — | Yes |
| 810-676 | MARINECITY | 829J | — | Yes |
| 810-678 | METAMORA | 0695 | — | Yes |
| 810-679 | CROSWELL | 9323 | — | Yes |
| 810-680 | BRIGHTON | 9748 | — | — |
| 810-682 | SANDUSKY | 829J | — | Yes |
| 810-683 | IMLAY CITY | 2964 | — | Yes |
| 810-686 | CLIMTMORRS | 9323 | — | — |
| 810-687 | CLIMTMORRS | 9323 | — | — |
| 810-688 | NORTH BRCH | 0695 | — | Yes |
| 810-689 | PORT HURON | 6534 | — | Yes |
| 810-691 | FLINT | 2964 | — | Yes |
| 810-692 | BYRON | 6120 | — | Yes |
| 810-694 | GRANDBLANC | 9323 | — | — |
| 810-695 | GRANDBLANC | 9323 | — | — |
| 810-696 | LEXINGTON | 6120 | — | Yes |
| 810-699 | APPLEGATE | 2550 | — | Yes |
| 810-700 | — | — | ||
| 810-701 | FLINT | 6003 | 2001-05-16 | — |
| 810-705 | BROWN CITY | 6003 | — | — |
| 810-706 | DRYDEN | 6003 | — | Yes |
| 810-710 | CARSONVL | 6534 | — | Yes |
| 810-711 | XXXXXXXXXX | MULT | — | — |
| 810-712 | CROSWELL | 6534 | — | Yes |
| 810-714 | FENTON | 9323 | — | Yes |
| 810-715 | FLINT | 9323 | — | Yes |
| 810-720 | FLINT | 9323 | — | — |
| 810-721 | IMLAY CITY | 0695 | — | Yes |
| 810-722 | SMITHS CRK | 516J | 2022-02-22 | Yes |
| 810-724 | IMLAY CITY | 0695 | — | — |
| 810-727 | DAVISON | 516J | 2022-02-28 | Yes |
| 810-728 | LAPEER | 6534 | — | Yes |
| 810-729 | CAPAC | 817J | 2001-07-17 | — |
| 810-730 | FLINT | 6003 | — | — |
| 810-732 | FLINT | 9323 | — | — |
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.