LEVEL 3 COMMUNICATIONS, LLC - WI
23 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-227 | MADISON | 5489 | — | Yes |
| 608-229 | MADISON | 5489 | — | Yes |
| 608-327 | MADISON | 5489 | — | Yes |
| 608-416 | MADISON | 5489 | 2014-10-03 | Yes |
| 608-433 | LA CROSSE | 5489 | 2002-03-14 | Yes |
| 608-466 | BELOIT | 5489 | 2002-05-13 | Yes |
| 608-467 | MADISON | 5489 | 2002-05-13 | Yes |
| 608-478 | SUNPRAIRIE | 5489 | — | Yes |
| 608-492 | STOUGHTON | 5489 | 2006-02-10 | Yes |
| 608-498 | LA CROSSE | 5489 | 2003-04-17 | Yes |
| 608-512 | MADISON | 5489 | — | Yes |
| 608-517 | FENNIMORE | 5489 | 2017-10-09 | Yes |
| 608-554 | JANESVILLE | 5489 | 2003-02-05 | Yes |
| 608-561 | EDGERTON | 5489 | 2002-10-21 | Yes |
| 608-668 | LA CROSSE | 5489 | 2019-10-08 | Yes |
| 608-699 | CAMBRIDGE | 5489 | 2014-11-25 | Yes |
| 608-708 | DEERFIELD | 5489 | 2017-09-28 | Yes |
| 608-713 | BELOIT | 5489 | — | Yes |
| 608-716 | MADISON | 5489 | 2019-04-22 | Yes |
| 608-729 | MADISON | 5489 | 2005-11-09 | Yes |
| 608-807 | MADISON | 5489 | — | Yes |
| 608-810 | PORTAGE | 5489 | 2021-11-05 | Yes |
| 608-816 | LA CROSSE | 5489 | 2022-01-31 | 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.