TELEPORT COMMUNICATIONS AMERICA, LLC - MI
22 prefixes in 586 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 586-225 | CENTERLINE | 770E | 2014-02-28 | Yes |
| 586-232 | WASHINGTON | 770E | 2006-03-06 | Yes |
| 586-297 | CENTERLINE | 770E | 2016-01-28 | Yes |
| 586-310 | MT CLEMENS | 770E | 2021-12-23 | Yes |
| 586-316 | WARREN | 770E | 2021-08-26 | Yes |
| 586-330 | NEWBALTIMR | 770E | — | Yes |
| 586-331 | ROMEO | 770E | — | Yes |
| 586-430 | RICHMOND | 770E | — | Yes |
| 586-473 | ARMADA | 770E | — | Yes |
| 586-580 | UTICA | 770E | — | Yes |
| 586-646 | NEW HAVEN | 770E | — | Yes |
| 586-697 | WASHINGTON | 770E | — | Yes |
| 586-738 | MT CLEMENS | 770E | — | Yes |
| 586-788 | UTICA | 770E | 2017-11-29 | Yes |
| 586-834 | CENTERLINE | 770E | — | Yes |
| 586-840 | MT CLEMENS | 770E | — | Yes |
| 586-843 | UTICA | 770E | — | Yes |
| 586-859 | ROSEVILLE | 770E | — | Yes |
| 586-864 | WARREN | 770E | — | Yes |
| 586-879 | ROSEVILLE | 770E | — | Yes |
| 586-884 | UTICA | 770E | — | Yes |
| 586-920 | CENTERLINE | 770E | — | 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.