LEVEL 3 COMMUNICATIONS, LLC - MI
19 prefixes in 231 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 231-222 | EASTJORDAN | 6120 | 2002-04-04 | Yes |
| 231-225 | FREMONT | 6120 | 2002-04-04 | Yes |
| 231-279 | BIG RAPIDS | 6120 | 2019-12-20 | Yes |
| 231-333 | CHEBOYGAN | 6120 | 2002-04-04 | Yes |
| 231-366 | FRUITPORT | 6120 | 2003-02-27 | Yes |
| 231-480 | LUDINGTON | 6120 | 2002-05-23 | Yes |
| 231-498 | ELK RAPIDS | 6120 | 2004-10-20 | Yes |
| 231-518 | KALKASKA | 6120 | 2001-06-18 | Yes |
| 231-577 | CADILLAC | 6120 | 2002-05-14 | Yes |
| 231-622 | PETOSKEY | 6120 | 2002-08-19 | Yes |
| 231-648 | HOWARDCITY | 6120 | — | Yes |
| 231-668 | TRAVERSECY | 6120 | 2002-04-29 | Yes |
| 231-674 | GRANT | 6120 | 2001-05-18 | Yes |
| 231-680 | REED CITY | 6120 | 2002-08-19 | Yes |
| 231-683 | MUSKEGON | 6120 | 2001-07-09 | Yes |
| 231-803 | MORLEY | 6120 | 2001-05-18 | Yes |
| 231-844 | INDIAN RIV | 6120 | 2001-06-18 | Yes |
| 231-903 | MUSKEGON | 6120 | 2002-04-29 | Yes |
| 231-916 | MANCELONA | 6120 | 2001-06-18 | 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.