FRONTIER NORTH INC. - WI
42 prefixes in 920 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 920-269 | LOMIRA | 0886 | — | Yes |
| 920-276 | THERESA | 0886 | 2001-06-12 | Yes |
| 920-349 | HUSTISFORD | 0886 | — | Yes |
| 920-355 | MAPLETON | 0886 | 2001-06-18 | Yes |
| 920-368 | NEOSHO | 0886 | 2001-06-18 | Yes |
| 920-474 | MAPLETON | 0886 | — | Yes |
| 920-477 | EDEN | 0886 | — | Yes |
| 920-478 | WATERLOO | 0886 | — | Yes |
| 920-488 | THERESA | 0886 | — | Yes |
| 920-526 | GREENBUSH | 0886 | — | Yes |
| 920-528 | CASCADE | 0886 | — | Yes |
| 920-533 | CAMPBELSPT | 0886 | — | Yes |
| 920-564 | OOSTBURG | 0886 | — | Yes |
| 920-583 | OAKFIELD | 0886 | — | Yes |
| 920-625 | NEOSHO | 0886 | — | Yes |
| 920-648 | LAKE MILLS | 0886 | — | Yes |
| 920-668 | CEDARGROVE | 0886 | — | Yes |
| 920-696 | CLYMAN | 0886 | — | Yes |
| 920-732 | WHITELAW | 0886 | — | Yes |
| 920-753 | MT CALVARY | 0886 | — | Yes |
| 920-754 | REEDSVILLE | 0886 | — | Yes |
| 920-755 | MISHICOT | 0886 | — | Yes |
| 920-756 | BRILLION | 0886 | — | Yes |
| 920-793 | TWO RIVERS | 0886 | — | Yes |
| 920-794 | TWO RIVERS | 0886 | — | Yes |
| 920-795 | JOHNSBURG | 0886 | — | Yes |
| 920-823 | JACKSONPT | 0886 | — | Yes |
| 920-839 | BAILEYSHBR | 0886 | — | Yes |
| 920-844 | BRILLION | 0886 | 2001-06-08 | Yes |
| 920-847 | WASHIGTNIS | 0886 | — | Yes |
| 920-849 | CHILTON | 0886 | — | Yes |
| 920-853 | HILBERT | 0886 | — | Yes |
| 920-854 | SISTER BAY | 0886 | — | Yes |
| 920-868 | EGG HARBOR | 0886 | — | Yes |
| 920-876 | ELKHART LK | 0886 | — | Yes |
| 920-892 | PLYMOUTH | 0886 | — | Yes |
| 920-893 | PLYMOUTH | 0886 | — | — |
| 920-894 | KIEL | 0886 | — | Yes |
| 920-898 | NEWHOLSTEN | 0886 | — | Yes |
| 920-925 | LEBANON | 0886 | — | Yes |
| 920-994 | RANDOMLAKE | 0886 | — | Yes |
| 920-999 | ST CLOUD | 0886 | — | 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.