LEVEL 3 COMMUNICATIONS, LLC - MI
30 prefixes in 517 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 517-213 | CHARLOTTE | 6120 | — | Yes |
| 517-219 | FOWLERVL | 6120 | 2004-06-23 | Yes |
| 517-224 | POTTERVL | 6120 | 2004-10-20 | Yes |
| 517-305 | CLARKLAKE | 6120 | 2008-09-16 | Yes |
| 517-441 | EATON RPD | 6120 | — | Yes |
| 517-459 | PARMA | 6120 | 2009-11-17 | Yes |
| 517-507 | LANSING | 6120 | — | Yes |
| 517-579 | HOWELL | 6120 | — | Yes |
| 517-580 | LANSING | 6120 | — | Yes |
| 517-583 | TEKONSHA | 6120 | 2002-08-19 | Yes |
| 517-618 | HOWELL | 6120 | — | Yes |
| 517-705 | BURLINGTON | 6120 | 2001-11-16 | Yes |
| 517-714 | BURLINGTON | 6120 | 2002-08-19 | Yes |
| 517-728 | TEKONSHA | 6120 | 2001-12-27 | Yes |
| 517-731 | GRANDLEDGE | 6120 | 2009-11-16 | Yes |
| 517-743 | PORTLAND | 6120 | 2001-10-22 | Yes |
| 517-756 | UNION CITY | 6120 | 2002-08-19 | Yes |
| 517-774 | COLDWTR LK | 6120 | 2002-08-19 | Yes |
| 517-781 | COLDWATER | 6120 | 2002-08-19 | Yes |
| 517-803 | LANSING | 6120 | 2002-05-14 | Yes |
| 517-826 | JONESVILLE | 6120 | 2002-05-14 | Yes |
| 517-833 | MASON | 6120 | 2004-10-20 | Yes |
| 517-853 | LANSING | 6120 | — | Yes |
| 517-858 | BRONSON | 6120 | 2002-08-19 | Yes |
| 517-868 | DIMONDALE | 6120 | — | Yes |
| 517-878 | LESLIE | 6120 | 2005-11-28 | Yes |
| 517-879 | JACKSON | 6120 | 2002-05-14 | Yes |
| 517-908 | LANSING | 6120 | — | Yes |
| 517-910 | ONONDAGA | 6120 | 2006-01-17 | Yes |
| 517-939 | QUINCY | 6120 | 2007-06-18 | 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.