All assignees
524 prefixes in 810 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 810-300 | PORT HURON | 6003 | 2001-01-23 | — |
| 810-301 | FLINT | 9323 | — | — |
| 810-302 | LAPEER | 6003 | 2022-02-22 | Yes |
| 810-303 | ALGONAC | 490J | 2022-01-04 | Yes |
| 810-304 | YALE | 6003 | — | — |
| 810-305 | MEMPHIS | 6003 | — | — |
| 810-306 | BRIGHTON | 6534 | 2023-02-13 | Yes |
| 810-307 | LAPEER | 6534 | 2023-04-20 | Yes |
| 810-308 | FLINT | 5562 | 2008-11-17 | Yes |
| 810-309 | FLINT | 543C | 2008-10-02 | Yes |
| 810-310 | CAPAC | 6003 | — | Yes |
| 810-311 | XXXXXXXXXX | MULT | — | — |
| 810-312 | BRIGHTON | 9748 | — | — |
| 810-314 | PORT HURON | 543C | 2021-06-16 | Yes |
| 810-315 | DRYDEN | 2550 | — | Yes |
| 810-316 | BRIGHTON | 2964 | 2022-03-09 | Yes |
| 810-317 | LAPEER | 6534 | 2023-06-21 | Yes |
| 810-318 | LAPEER | 543C | 2023-06-22 | Yes |
| 810-319 | RANKIN | 543C | 2023-06-22 | Yes |
| 810-320 | PORT HURON | 6120 | — | Yes |
| 810-321 | JEDDO | 933G | 2014-05-30 | Yes |
| 810-322 | LAPEER | 6534 | 2017-09-19 | Yes |
| 810-323 | LAPEER | 6534 | 2023-12-22 | Yes |
| 810-324 | AVOCA | 0695 | — | Yes |
| 810-325 | GOODELLS | 0695 | — | Yes |
| 810-326 | ST CLAIR | 9323 | — | Yes |
| 810-327 | JEDDO | 0695 | — | Yes |
| 810-328 | ST CLAIR | 829J | — | Yes |
| 810-329 | ST CLAIR | 9323 | — | — |
| 810-330 | LAPEER | 6534 | 2024-02-08 | Yes |
| 810-331 | ALMONT | 991E | 2019-05-17 | Yes |
| 810-332 | FLINT | 6534 | 2024-12-30 | Yes |
| 810-333 | BRIGHTON | 2964 | — | Yes |
| 810-334 | PORT HURON | 6534 | — | — |
| 810-335 | ALGONAC | 6534 | — | Yes |
| 810-336 | FLINT | 5562 | 2008-03-03 | Yes |
| 810-337 | FLINT | 318J | 2016-03-14 | Yes |
| 810-338 | LAPEER | 6534 | — | — |
| 810-339 | FLINT | 508J | — | Yes |
| 810-340 | PORT HURON | 9748 | — | — |
| 810-341 | FLINT | 9323 | — | Yes |
| 810-342 | FLINT | 9323 | — | Yes |
| 810-343 | SOUTHFIELD | 2964 | — | Yes |
| 810-344 | GRANDBLANC | 7279 | 2005-01-26 | Yes |
| 810-345 | FLINT | 965H | 2021-02-19 | Yes |
| 810-346 | BROWN CITY | 0695 | — | Yes |
| 810-347 | FLINT | 6003 | — | — |
| 810-348 | FLINT | 6003 | — | — |
| 810-349 | CLIMTMORRS | 2964 | 2024-02-15 | Yes |
| 810-350 | MONTROSE | 318J | 2006-09-12 | Yes |
| 810-351 | FENTON | 2964 | 2024-02-16 | Yes |
| 810-352 | LINDEN | 2964 | 2024-02-16 | Yes |
| 810-353 | FLINT | 6534 | 2024-04-15 | Yes |
| 810-354 | FENTON | 7279 | 2006-03-20 | Yes |
| 810-355 | BRIGHTON | 6120 | — | Yes |
| 810-356 | LAPEER | 6120 | — | Yes |
| 810-357 | PORT HURON | 2964 | 2001-12-28 | Yes |
| 810-358 | LAPEER | 6003 | 2001-08-17 | — |
| 810-359 | LEXINGTON | 9323 | — | Yes |
| 810-360 | BRIGHTON | 6120 | 2005-12-27 | Yes |
| 810-361 | LAPEER | 6534 | 2024-12-16 | Yes |
| 810-362 | LAPEER | 6534 | 2025-04-24 | Yes |
| 810-363 | PORT HURON | 770E | 2019-07-29 | Yes |
| 810-364 | PORT HURON | 9323 | — | — |
| 810-365 | FLINT | 6534 | 2025-05-09 | Yes |
| 810-366 | DECKERVL | 6534 | 2001-11-27 | Yes |
| 810-367 | SMITHS CRK | 0695 | — | Yes |
| 810-368 | CLIMTMORRS | 7279 | — | Yes |
| 810-369 | GOODRICH | 6120 | 2013-10-10 | Yes |
| 810-370 | BYRON | 770E | — | Yes |
| 810-371 | CAPAC | 2550 | — | Yes |
| 810-372 | PORT HURON | 671J | 2025-07-01 | Yes |
| 810-373 | FENTON | 318J | — | Yes |
| 810-374 | OTISVILLE | 770E | — | Yes |
| 810-375 | DRYDEN | 2550 | 2001-12-28 | Yes |
| 810-376 | DECKERVL | 0695 | — | Yes |
| 810-377 | LEXINGTON | 770E | — | Yes |
| 810-378 | PECK | 9323 | — | Yes |
| 810-379 | DAVISON | 991E | 2017-05-03 | Yes |
| 810-380 | FLUSHING | 624H | 2021-05-19 | Yes |
| 810-381 | LAPEER | 6534 | 2025-07-07 | Yes |
| 810-382 | FLINT | 543C | 2023-06-22 | Yes |
| 810-383 | LAPEER | 6534 | 2025-09-16 | Yes |
| 810-384 | EMMETT | 0695 | — | Yes |
| 810-385 | PORT HURON | 9323 | — | — |
| 810-386 | FLINT | 6534 | 2025-10-09 | Yes |
| 810-387 | YALE | 0695 | — | Yes |
| 810-388 | PORT HURON | 9323 | — | Yes |
| 810-389 | FLINT | 9748 | — | — |
| 810-390 | FENTON | 2550 | — | Yes |
| 810-391 | FLINT | 829J | — | Yes |
| 810-392 | MEMPHIS | 0695 | — | Yes |
| 810-393 | LAPEER | 6534 | 2025-10-10 | Yes |
| 810-394 | FLINT | 2964 | — | — |
| 810-395 | CAPAC | 0695 | — | Yes |
| 810-396 | FLINT | 817J | — | — |
| 810-397 | FLINT | 2964 | — | Yes |
| 810-398 | LEXINGTON | 817J | — | — |
| 810-399 | FLINT | 6003 | 2008-08-28 | Yes |
| 810-400 | MARINECITY | 817J | 2002-03-27 | — |
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.