LEVEL 3 COMMUNICATIONS, LLC - MI
22 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-228 | DETROITZN6 | 6120 | — | Yes |
| 313-254 | DETROITZN6 | 6120 | — | Yes |
| 313-263 | DETROITZN1 | 6120 | — | Yes |
| 313-279 | DETROITZN4 | 6120 | — | Yes |
| 313-281 | DETROITZN3 | 6120 | — | Yes |
| 313-332 | DETROITZN2 | 6120 | — | Yes |
| 313-334 | DETROITZN3 | 6120 | — | Yes |
| 313-344 | DETROITZN2 | 6120 | — | Yes |
| 313-346 | DETROITZN3 | 6120 | — | Yes |
| 313-432 | DETROITZN2 | 6120 | — | Yes |
| 313-483 | DETROITZN1 | 6120 | — | Yes |
| 313-484 | DETROITZN1 | 6120 | — | Yes |
| 313-486 | DETROITZN5 | 6120 | — | Yes |
| 313-512 | DETROITZN4 | 6120 | 2020-08-19 | Yes |
| 313-559 | DETROITZN5 | 6120 | — | Yes |
| 313-586 | DETROITZN6 | 6120 | — | Yes |
| 313-662 | DETROITZN5 | 6120 | — | Yes |
| 313-769 | DETROITZN6 | 6120 | — | Yes |
| 313-828 | DETROITZN5 | 6120 | — | Yes |
| 313-859 | DETROITZN5 | 6120 | — | Yes |
| 313-879 | DETROITZN1 | 6120 | — | Yes |
| 313-887 | DETROITZN1 | 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.