All assignees
524 prefixes in 810 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 810-956 | PORT HURON | 7279 | — | Yes |
| 810-957 | LINDEN | 046L | — | Yes |
| 810-958 | PORT HURON | 7279 | — | Yes |
| 810-959 | — | — | ||
| 810-962 | FLINT | 6534 | — | Yes |
| 810-963 | FLINT | 7279 | — | Yes |
| 810-964 | FLINT | 6534 | — | — |
| 810-965 | FLINT | 6003 | — | Yes |
| 810-966 | PORT HURON | 9323 | — | Yes |
| 810-969 | LAPEER | 2964 | 2001-12-28 | Yes |
| 810-971 | PORT HURON | 6630 | — | — |
| 810-972 | FLINT | 9748 | — | — |
| 810-973 | LAPEER | 6630 | — | — |
| 810-976 | — | — | ||
| 810-982 | PORT HURON | 9323 | — | — |
| 810-984 | PORT HURON | 9323 | — | — |
| 810-985 | PORT HURON | 9323 | — | — |
| 810-986 | BRIGHTON | 6534 | 2002-08-28 | Yes |
| 810-987 | PORT HURON | 9323 | — | — |
| 810-988 | MONTROSE | 817J | 2004-12-06 | — |
| 810-989 | PORT HURON | 9323 | — | — |
| 810-990 | PORT HURON | 770E | — | Yes |
| 810-991 | HARTLAND | 2550 | 2003-02-21 | Yes |
| 810-999 | XXXXXXXXXX | 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.