OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
28 prefixes in 231 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 231-206 | MUSKEGON | 2964 | — | Yes |
| 231-218 | TRAVERSECY | 2964 | — | Yes |
| 231-253 | CADILLAC | 2964 | 2018-11-08 | Yes |
| 231-254 | PETOSKEY | 2964 | 2019-10-24 | Yes |
| 231-260 | MUSKEGON | 2964 | 2017-03-03 | Yes |
| 231-284 | MANISTEE | 2964 | 2021-03-01 | Yes |
| 231-285 | CADILLAC | 2964 | 2020-01-09 | Yes |
| 231-343 | MUSKEGON | 2964 | — | Yes |
| 231-370 | MUSKEGON | 2964 | 2021-09-03 | Yes |
| 231-380 | NEWAYGO | 2964 | 2022-01-10 | Yes |
| 231-390 | BIG RAPIDS | 2964 | 2021-10-26 | Yes |
| 231-392 | TRAVERSECY | 2964 | 2001-01-09 | Yes |
| 231-397 | MANISTEE | 2964 | 2021-11-03 | Yes |
| 231-413 | KALKASKA | 2964 | 2022-02-14 | Yes |
| 231-425 | LUDINGTON | 2964 | — | Yes |
| 231-437 | CHARLEVOIX | 2964 | — | Yes |
| 231-468 | CADILLAC | 2964 | 2001-02-05 | Yes |
| 231-493 | TRAVERSECY | 2964 | 2017-05-17 | Yes |
| 231-552 | CHARLEVOIX | 2964 | 2025-07-31 | Yes |
| 231-578 | MUSKEGON | 2964 | — | Yes |
| 231-580 | BIG RAPIDS | 2964 | 2001-02-05 | Yes |
| 231-624 | KALKASKA | 2964 | — | Yes |
| 231-629 | BIG RAPIDS | 2964 | — | Yes |
| 231-638 | MUSKEGON | 2964 | 2001-03-09 | Yes |
| 231-642 | TRAVERSECY | 2964 | 2001-04-02 | Yes |
| 231-758 | PETOSKEY | 2964 | — | Yes |
| 231-846 | CADILLAC | 2964 | — | Yes |
| 231-923 | HART | 2964 | 2001-05-18 | 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.