MICHIGAN BELL TEL CO
100 prefixes in 586 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 586-226 | MT CLEMENS | 9323 | — | — |
| 586-228 | MT CLEMENS | 9323 | — | — |
| 586-239 | MT CLEMENS | 9323 | 2007-12-05 | Yes |
| 586-247 | UTICA | 9323 | — | — |
| 586-254 | UTICA | 9323 | — | — |
| 586-263 | MT CLEMENS | 9323 | — | — |
| 586-264 | WARREN | 9323 | — | — |
| 586-268 | WARREN | 9323 | — | — |
| 586-274 | WARREN | 9323 | — | — |
| 586-276 | WARREN | 9323 | — | Yes |
| 586-282 | CENTERLINE | 9323 | 2008-11-03 | Yes |
| 586-285 | ROSEVILLE | 9323 | — | Yes |
| 586-286 | MT CLEMENS | 9323 | — | — |
| 586-293 | ROSEVILLE | 9323 | — | — |
| 586-294 | ROSEVILLE | 9323 | — | — |
| 586-296 | ROSEVILLE | 9323 | — | — |
| 586-307 | MT CLEMENS | 9323 | — | Yes |
| 586-323 | UTICA | 9323 | — | — |
| 586-336 | ROMEO | 9323 | — | Yes |
| 586-412 | MT CLEMENS | 9323 | — | — |
| 586-415 | ROSEVILLE | 9323 | — | Yes |
| 586-416 | MT CLEMENS | 9323 | — | Yes |
| 586-421 | MT CLEMENS | 9323 | — | Yes |
| 586-427 | CENTERLINE | 9323 | — | — |
| 586-443 | ROSEVILLE | 9323 | — | Yes |
| 586-445 | ROSEVILLE | 9323 | — | — |
| 586-446 | WARREN | 9323 | — | — |
| 586-447 | ROSEVILLE | 9323 | — | Yes |
| 586-463 | MT CLEMENS | 9323 | — | — |
| 586-465 | MT CLEMENS | 9323 | — | — |
| 586-466 | MT CLEMENS | 9323 | — | — |
| 586-468 | MT CLEMENS | 9323 | — | — |
| 586-469 | MT CLEMENS | 9323 | — | — |
| 586-492 | CENTERLINE | 9323 | — | — |
| 586-493 | MT CLEMENS | 9323 | — | — |
| 586-497 | CENTERLINE | 9323 | — | — |
| 586-498 | ROSEVILLE | 9323 | — | Yes |
| 586-532 | UTICA | 9323 | — | — |
| 586-552 | ROSEVILLE | 9323 | — | Yes |
| 586-558 | CENTERLINE | 9323 | — | — |
| 586-563 | ROSEVILLE | 9323 | — | Yes |
| 586-566 | UTICA | 9323 | — | — |
| 586-573 | CENTERLINE | 9323 | — | — |
| 586-574 | CENTERLINE | 9323 | — | Yes |
| 586-575 | CENTERLINE | 9323 | — | — |
| 586-576 | CENTERLINE | 9323 | — | Yes |
| 586-578 | CENTERLINE | 9323 | — | Yes |
| 586-582 | CENTERLINE | 9323 | — | Yes |
| 586-598 | MT CLEMENS | 9323 | — | — |
| 586-677 | WASHINGTON | 9323 | — | — |
| 586-716 | NEWBALTIMR | 9323 | — | Yes |
| 586-725 | NEWBALTIMR | 9323 | — | — |
| 586-726 | UTICA | 9323 | — | — |
| 586-731 | UTICA | 9323 | — | — |
| 586-739 | UTICA | 9323 | — | — |
| 586-741 | MT CLEMENS | 9323 | — | Yes |
| 586-746 | MT CLEMENS | 9323 | — | Yes |
| 586-749 | NEW HAVEN | 9323 | — | — |
| 586-751 | CENTERLINE | 9323 | — | — |
| 586-752 | ROMEO | 9323 | — | — |
| 586-753 | CENTERLINE | 9323 | — | Yes |
| 586-754 | CENTERLINE | 9323 | — | — |
| 586-755 | CENTERLINE | 9323 | — | — |
| 586-756 | CENTERLINE | 9323 | — | — |
| 586-757 | CENTERLINE | 9323 | — | — |
| 586-758 | CENTERLINE | 9323 | — | Yes |
| 586-759 | CENTERLINE | 9323 | — | — |
| 586-771 | ROSEVILLE | 9323 | — | — |
| 586-772 | ROSEVILLE | 9323 | — | — |
| 586-773 | ROSEVILLE | 9323 | — | — |
| 586-774 | ROSEVILLE | 9323 | — | — |
| 586-775 | ROSEVILLE | 9323 | — | — |
| 586-776 | ROSEVILLE | 9323 | — | — |
| 586-777 | ROSEVILLE | 9323 | — | — |
| 586-778 | ROSEVILLE | 9323 | — | — |
| 586-779 | ROSEVILLE | 9323 | — | — |
| 586-781 | WASHINGTON | 9323 | — | — |
| 586-783 | MT CLEMENS | 9323 | — | — |
| 586-784 | ARMADA | 9323 | — | Yes |
| 586-786 | WASHINGTON | 9323 | — | Yes |
| 586-790 | MT CLEMENS | 9323 | — | — |
| 586-791 | MT CLEMENS | 9323 | — | — |
| 586-792 | MT CLEMENS | 9323 | — | — |
| 586-795 | WARREN | 9323 | — | — |
| 586-803 | UTICA | 9323 | — | Yes |
| 586-825 | WARREN | 9323 | — | Yes |
| 586-826 | WARREN | 9323 | — | — |
| 586-939 | WARREN | 9323 | — | — |
| 586-947 | CENTERLINE | 9323 | — | — |
| 586-948 | MT CLEMENS | 9323 | — | Yes |
| 586-949 | MT CLEMENS | 9323 | — | — |
| 586-954 | MT CLEMENS | 9323 | — | — |
| 586-977 | WARREN | 9323 | — | — |
| 586-978 | WARREN | 9323 | — | — |
| 586-979 | WARREN | 9323 | — | — |
| 586-983 | WARREN | 9323 | — | Yes |
| 586-986 | CENTERLINE | 9323 | — | — |
| 586-991 | UTICA | 9323 | 2001-04-20 | Yes |
| 586-992 | WASHINGTON | 9323 | 2001-05-16 | Yes |
| 586-997 | UTICA | 9323 | — | 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.