All assignees
524 prefixes in 810 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 810-401 | LAPEER | 6534 | 2025-11-06 | Yes |
| 810-402 | LAPEER | 6534 | 2025-11-06 | Yes |
| 810-403 | FLINT | 6534 | 2026-03-24 | Yes |
| 810-404 | CARSONVL | 6718 | — | — |
| 810-405 | MONTROSE | 6003 | 2026-07-22 | Yes |
| 810-406 | FLINT | 6003 | 2008-09-18 | Yes |
| 810-407 | FLINT | 6534 | — | Yes |
| 810-408 | LAPEER | 6534 | 2026-09-09 | Yes |
| 810-409 | LAPEER | 6534 | 2026-09-09 | Yes |
| 810-410 | FLINT | 770E | — | Yes |
| 810-411 | XXXXXXXXXX | MULT | — | — |
| 810-412 | DAVISON | 6120 | 2005-11-21 | Yes |
| 810-414 | CARSONVL | 6718 | — | — |
| 810-417 | IMLAY CITY | 6003 | — | Yes |
| 810-420 | MARINECITY | 6120 | 2002-04-23 | Yes |
| 810-422 | FLINT | 9323 | — | Yes |
| 810-423 | FLINT | 2964 | — | Yes |
| 810-424 | FLINT | 9323 | — | — |
| 810-425 | PT SANILAC | 770E | 2002-01-16 | Yes |
| 810-426 | MARINECITY | 2550 | — | Yes |
| 810-428 | GRANDBLANC | 6534 | 2017-06-02 | Yes |
| 810-429 | FLINT | 6003 | — | — |
| 810-432 | PORT HURON | 991E | 2016-06-27 | Yes |
| 810-433 | FENTON | 6120 | — | Yes |
| 810-434 | PORT HURON | 6003 | — | — |
| 810-440 | CLIMTMORRS | 543C | 2021-05-19 | Yes |
| 810-441 | LAPEER | 6003 | — | — |
| 810-442 | DECKERVL | 2550 | 2001-12-28 | Yes |
| 810-444 | FLINT | 6003 | — | — |
| 810-445 | GRANDBLANC | 508J | 2014-08-28 | Yes |
| 810-447 | FLINT | 991E | 2012-01-30 | Yes |
| 810-448 | DRYDEN | 817J | 2001-03-16 | — |
| 810-449 | FLINT | 2964 | 2001-09-21 | Yes |
| 810-452 | LAPEER | 817J | 2001-02-15 | — |
| 810-454 | ST CLAIR | 7279 | — | Yes |
| 810-455 | PORT HURON | 829J | — | Yes |
| 810-458 | LINDEN | 770E | — | Yes |
| 810-459 | PONTIAC | 5562 | — | Yes |
| 810-462 | YALE | 770E | — | Yes |
| 810-466 | COLUMBIAVL | 516J | 2022-02-18 | Yes |
| 810-471 | FLINT | 6120 | — | Yes |
| 810-474 | AVOCA | 770E | — | Yes |
| 810-475 | BROWN CITY | 770E | — | Yes |
| 810-476 | APPLEGATE | 6120 | — | Yes |
| 810-479 | PORT HURON | 6120 | — | Yes |
| 810-483 | YALE | 817J | 2001-04-20 | — |
| 810-484 | FLINT | 2964 | 2016-05-26 | Yes |
| 810-487 | FLUSHING | 9323 | — | Yes |
| 810-488 | PORT HURON | 6534 | 2001-03-16 | Yes |
| 810-493 | FLINT | 6003 | 2012-12-08 | Yes |
| 810-494 | BRIGHTON | 9323 | — | Yes |
| 810-495 | GRANDBLANC | 6003 | 2013-01-22 | Yes |
| 810-496 | FLINT | 6120 | — | Yes |
| 810-498 | GRANDBLANC | 6534 | 2015-07-23 | Yes |
| 810-499 | SOUTHFIELD | 2964 | — | Yes |
| 810-500 | HADLEY | 543C | 2021-07-02 | Yes |
| 810-503 | DAVISON | 770E | — | Yes |
| 810-505 | DECKERVL | 770E | — | Yes |
| 810-510 | COLUMBIAVL | 933G | 2014-04-14 | Yes |
| 810-511 | XXXXXXXXXX | MULT | — | — |
| 810-512 | ALGONAC | 2550 | 2001-10-18 | Yes |
| 810-513 | FLINT | 6534 | — | — |
| 810-515 | FLINT | 6003 | 2002-02-20 | Yes |
| 810-516 | FLINT | 6003 | — | — |
| 810-519 | FENTON | 6120 | — | Yes |
| 810-520 | XXXXXXXXXX | 9323 | — | — |
| 810-522 | BRIGHTON | 770E | — | Yes |
| 810-523 | SOUTHFIELD | 2964 | — | Yes |
| 810-525 | EMMETT | 770E | — | Yes |
| 810-528 | FLINT | 6630 | — | — |
| 810-529 | LAPEER | 6534 | 2019-01-28 | Yes |
| 810-531 | PORT HURON | 2964 | 2002-04-23 | Yes |
| 810-533 | SOUTHFIELD | 2964 | — | Yes |
| 810-534 | BRIGHTON | 829J | — | Yes |
| 810-535 | MEMPHIS | 3535 | 2002-01-16 | Yes |
| 810-537 | SANDUSKY | 2964 | 2001-11-27 | Yes |
| 810-538 | LAPEER | 829J | — | Yes |
| 810-539 | DECKERVL | 817J | 2001-09-21 | — |
| 810-542 | DRYDEN | 6534 | — | Yes |
| 810-543 | MEMPHIS | 6534 | — | Yes |
| 810-544 | CARSONVL | 770E | — | Yes |
| 810-545 | COLUMBIAVL | 770E | — | Yes |
| 810-546 | CROSWELL | 770E | — | Yes |
| 810-547 | CLIMTMORRS | 770E | — | Yes |
| 810-548 | LAPEER | 9748 | — | — |
| 810-553 | FLINT | 6003 | 2011-05-16 | Yes |
| 810-555 | DIR ASST | MULT | — | — |
| 810-557 | SANDUSKY | 9748 | — | — |
| 810-560 | SOUTHFIELD | 2964 | — | Yes |
| 810-561 | ST CLAIR | 817J | — | — |
| 810-564 | CLIMTMORRS | 9323 | — | Yes |
| 810-569 | FLINT | 6003 | 2002-09-17 | — |
| 810-571 | PONTIAC | 6534 | — | Yes |
| 810-577 | FLINT | 2964 | — | Yes |
| 810-579 | GRANDBLANC | 829J | — | Yes |
| 810-580 | ALGONAC | 2964 | 2002-07-11 | Yes |
| 810-581 | MARINECITY | 6630 | — | — |
| 810-583 | SANDUSKY | 817J | — | — |
| 810-584 | GRANDBLANC | 6120 | — | Yes |
| 810-588 | BRIGHTON | 318J | — | 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.