LEVEL 3 COMMUNICATIONS, LLC - MI
26 prefixes in 586 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 586-203 | MT CLEMENS | 6120 | 2004-02-25 | Yes |
| 586-207 | WASHINGTON | 6120 | 2001-06-18 | Yes |
| 586-244 | NEW HAVEN | 6120 | 2006-03-07 | Yes |
| 586-270 | NEW HAVEN | 6120 | — | Yes |
| 586-273 | NEWBALTIMR | 6120 | — | Yes |
| 586-435 | ROSEVILLE | 6120 | — | Yes |
| 586-477 | MT CLEMENS | 6120 | — | Yes |
| 586-486 | CENTERLINE | 6120 | — | Yes |
| 586-501 | CENTERLINE | 6120 | — | Yes |
| 586-510 | CENTERLINE | 6120 | — | Yes |
| 586-540 | ROMEO | 6120 | — | Yes |
| 586-623 | ROMEO | 6120 | 2002-03-28 | Yes |
| 586-625 | ARMADA | 6120 | — | Yes |
| 586-648 | NEWBALTIMR | 6120 | 2002-08-28 | Yes |
| 586-649 | MT CLEMENS | 6120 | — | Yes |
| 586-693 | WARREN | 6120 | — | Yes |
| 586-723 | MT CLEMENS | 6120 | — | Yes |
| 586-797 | UTICA | 6120 | 2002-09-10 | Yes |
| 586-799 | UTICA | 6120 | — | Yes |
| 586-838 | WARREN | 6120 | — | Yes |
| 586-863 | ROSEVILLE | 6120 | — | Yes |
| 586-894 | ROMEO | 6120 | — | Yes |
| 586-928 | NEW HAVEN | 6120 | — | Yes |
| 586-932 | UTICA | 6120 | — | Yes |
| 586-933 | WARREN | 6120 | — | Yes |
| 586-981 | WARREN | 6120 | — | 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.