FRONTIER NORTH INC. - WI
53 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-253 | WISCONDLLS | 0886 | — | Yes |
| 608-254 | WISCONDLLS | 0886 | — | Yes |
| 608-296 | WESTFIELD | 0886 | — | Yes |
| 608-297 | MONTELLO | 0886 | — | Yes |
| 608-319 | DODGEVILLE | 0886 | 2001-05-11 | Yes |
| 608-339 | ADAMS | 0886 | — | Yes |
| 608-340 | BRIGGSVL | 0886 | 2001-05-11 | Yes |
| 608-350 | MAUSTON | 0886 | 2001-05-11 | Yes |
| 608-360 | LOGANVILLE | 0886 | 2001-05-11 | Yes |
| 608-383 | RICHLD CTR | 0886 | 2001-05-11 | Yes |
| 608-423 | CAMBRIDGE | 0886 | — | Yes |
| 608-424 | BELLEVILLE | 0886 | — | Yes |
| 608-429 | PARDEEVL | 0886 | — | Yes |
| 608-455 | BROOKLYN | 0886 | — | Yes |
| 608-493 | MERRIMAC | 0886 | — | Yes |
| 608-524 | REEDSBURG | 0886 | — | — |
| 608-544 | WITWEN | 0886 | — | Yes |
| 608-546 | PLAIN | 0886 | — | Yes |
| 608-549 | BLOOM CITY | 0886 | — | Yes |
| 608-564 | MONROE CTR | 0886 | — | Yes |
| 608-583 | LONE ROCK | 0886 | — | Yes |
| 608-585 | ITHACA | 0886 | — | Yes |
| 608-588 | SPG GREEN | 0886 | — | Yes |
| 608-592 | LODI | 0886 | — | Yes |
| 608-623 | COBB | 0886 | — | Yes |
| 608-643 | SAUK CITY | 0886 | — | Yes |
| 608-644 | SAUK CITY | 0886 | — | Yes |
| 608-647 | RICHLD CTR | 0886 | — | Yes |
| 608-655 | MARSHALL | 0886 | — | Yes |
| 608-666 | LYNDON STA | 0886 | — | Yes |
| 608-676 | CLINTON | 0886 | — | Yes |
| 608-727 | LOGANVILLE | 0886 | — | Yes |
| 608-742 | PORTAGE | 0886 | — | — |
| 608-745 | PORTAGE | 0886 | — | Yes |
| 608-753 | ARENA | 0886 | — | Yes |
| 608-764 | DEERFIELD | 0886 | — | Yes |
| 608-825 | SUNPRAIRIE | 0886 | — | — |
| 608-834 | SUNPRAIRIE | 0886 | — | — |
| 608-835 | OREGON | 0886 | — | — |
| 608-837 | SUNPRAIRIE | 0886 | — | — |
| 608-838 | MCFARLAND | 0886 | — | Yes |
| 608-839 | COTTAGEGRV | 0886 | — | Yes |
| 608-847 | MAUSTON | 0886 | — | Yes |
| 608-879 | ORFORDVL | 0886 | — | Yes |
| 608-884 | EDGERTON | 0886 | — | Yes |
| 608-897 | BRODHEAD | 0886 | — | Yes |
| 608-924 | RIDGEWAY | 0886 | — | Yes |
| 608-935 | DODGEVILLE | 0886 | — | — |
| 608-937 | DODGEVILLE | 0886 | — | Yes |
| 608-967 | HOLLANDALE | 0886 | — | Yes |
| 608-981 | BRIGGSVL | 0886 | — | Yes |
| 608-986 | LIME RIDGE | 0886 | — | Yes |
| 608-987 | MINERAL PT | 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.