All assignees
799 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-901 | JANESVILLE | 6529 | 2018-10-31 | Yes |
| 608-902 | DICKEYVL | 490J | 2023-05-22 | Yes |
| 608-903 | LA CROSSE | 506J | 2023-07-26 | Yes |
| 608-904 | BELOIT | 6508 | 2023-09-27 | Yes |
| 608-905 | JANESVILLE | 6508 | 2023-12-01 | Yes |
| 608-906 | MADISON | 225C | 2006-02-06 | Yes |
| 608-907 | EVANSVILLE | 7421 | 2024-01-25 | Yes |
| 608-908 | WAUMANDEE | 516J | 2022-02-17 | Yes |
| 608-909 | OREGON | 007F | 2015-02-17 | Yes |
| 608-910 | MADISON | 6508 | 2024-02-14 | Yes |
| 608-911 | XXXXXXXXXX | MULT | — | — |
| 608-912 | DE FOREST | 007F | 2017-09-28 | Yes |
| 608-913 | COCHRANE | 516J | 2022-01-14 | Yes |
| 608-914 | MADISON | 7216 | 2024-01-18 | Yes |
| 608-915 | MADISON | 7216 | 2024-01-18 | Yes |
| 608-916 | MADISON | 7216 | 2024-01-18 | Yes |
| 608-917 | WISCONDLLS | 6529 | 2024-02-21 | Yes |
| 608-918 | SAUK CITY | 624H | 2023-05-02 | Yes |
| 608-919 | SOUTHWAYNE | 792K | 2024-03-14 | Yes |
| 608-920 | STOUGHTON | 321J | 2025-07-14 | Yes |
| 608-921 | JANESVILLE | 6274 | 2001-01-17 | Yes |
| 608-922 | GRATIOT | 1159 | — | Yes |
| 608-923 | OREGON | 225C | 2024-03-15 | Yes |
| 608-924 | RIDGEWAY | 0886 | — | Yes |
| 608-925 | SOUTHWAYNE | 6534 | 2017-08-08 | Yes |
| 608-926 | ENDEAVOR | 516J | 2022-01-14 | Yes |
| 608-927 | BELOIT | 073H | — | Yes |
| 608-928 | TOMAH | 225C | 2024-03-19 | Yes |
| 608-929 | HIGHLAND | 0922 | — | Yes |
| 608-930 | DODGEVILLE | 3043 | — | Yes |
| 608-931 | JANESVILLE | 6274 | 2001-12-31 | Yes |
| 608-932 | LA VALLE | 516J | 2022-01-27 | Yes |
| 608-933 | LYNDON STA | 965H | 2019-12-26 | Yes |
| 608-934 | JUDA | 0963 | — | Yes |
| 608-935 | DODGEVILLE | 0886 | — | — |
| 608-936 | WAUZEKA | 516J | 2022-02-17 | Yes |
| 608-937 | DODGEVILLE | 0886 | — | Yes |
| 608-938 | MONTICELLO | 0963 | — | Yes |
| 608-939 | MONROE CTR | 516J | 2022-03-18 | Yes |
| 608-940 | MADISON | 225C | 2024-06-12 | Yes |
| 608-941 | SUNPRAIRIE | 225C | 2024-06-12 | Yes |
| 608-942 | CAZENOVIA | 516J | 2022-01-14 | Yes |
| 608-943 | MONTFORT | 1159 | — | Yes |
| 608-944 | WOODFORD | 965H | 2021-06-29 | Yes |
| 608-945 | MOUNT ZION | 516J | 2022-02-17 | Yes |
| 608-946 | EDGERTON | 965H | 2021-07-02 | Yes |
| 608-947 | LIBETYPOLE | 516J | 2022-02-17 | Yes |
| 608-948 | RIDGEWAY | 624H | 2023-05-02 | Yes |
| 608-949 | MADISON | 227F | — | Yes |
| 608-950 | — | — | ||
| 608-951 | GALESVILLE | 6529 | 2025-01-21 | Yes |
| 608-952 | HOLMEN | 6529 | 2025-01-21 | Yes |
| 608-953 | LANCASTER | 6529 | 2025-01-22 | Yes |
| 608-954 | MUSCODA | 6529 | 2025-01-22 | Yes |
| 608-955 | SOLDIRSGRV | 508J | 2017-10-19 | Yes |
| 608-956 | RICHLD CTR | 6529 | 2025-01-23 | Yes |
| 608-957 | MADISON | 9327 | — | Yes |
| 608-958 | MADISON | — | — | |
| 608-959 | — | — | ||
| 608-960 | MADISON | 6534 | 2014-06-27 | Yes |
| 608-961 | MADISON | 225C | 2025-02-05 | Yes |
| 608-962 | BANGOR | 5562 | 2025-02-28 | Yes |
| 608-963 | BARABOO | 6274 | — | Yes |
| 608-964 | BRIGGSVL | 5562 | 2025-02-28 | Yes |
| 608-965 | SHULLSBURG | 1159 | — | Yes |
| 608-966 | BROWNTOWN | 0963 | — | Yes |
| 608-967 | HOLLANDALE | 0886 | — | Yes |
| 608-968 | WIOTA | 1159 | — | Yes |
| 608-969 | WIOTA | 516J | 2022-02-17 | Yes |
| 608-970 | PORTAGE | 5562 | 2025-02-28 | Yes |
| 608-971 | ELROY | 6529 | 2025-03-18 | Yes |
| 608-972 | BOSCOBEL | 5562 | 2025-03-18 | Yes |
| 608-973 | BRODHEAD | 6274 | 2025-04-04 | Yes |
| 608-974 | JANESVILLE | 6534 | 2025-04-23 | Yes |
| 608-975 | BELLEVILLE | 7216 | 2016-01-22 | Yes |
| 608-976 | XXXXXXXXXX | MULT | — | — |
| 608-977 | MADISON | 9327 | 2015-04-28 | Yes |
| 608-978 | MARSHALL | 516J | 2022-03-01 | Yes |
| 608-979 | VIROQUA | 624H | — | Yes |
| 608-980 | REEDSBURG | 6529 | 2025-05-23 | Yes |
| 608-981 | BRIGGSVL | 0886 | — | Yes |
| 608-982 | MADISON | 197D | 2018-03-23 | Yes |
| 608-983 | CAZENOVIA | 0899 | — | — |
| 608-984 | MADISON | 6534 | 2025-08-06 | Yes |
| 608-985 | LA VALLE | 0899 | — | — |
| 608-986 | LIME RIDGE | 0886 | — | Yes |
| 608-987 | MINERAL PT | 0886 | — | Yes |
| 608-988 | MOUNT HOPE | 0930 | — | Yes |
| 608-989 | BLAIR | 1159 | — | — |
| 608-990 | BARABOO | 225C | 2025-08-21 | Yes |
| 608-991 | BELOIT | 225C | 2025-08-21 | Yes |
| 608-992 | SABIN | 516J | 2022-02-24 | Yes |
| 608-993 | COBB | 225C | 2025-08-21 | Yes |
| 608-994 | BLOOMINGTN | 0930 | — | Yes |
| 608-995 | VERONA | 516J | 2022-03-18 | Yes |
| 608-996 | BAGLEY | 0930 | — | — |
| 608-997 | WAUNAKEE | 516J | 2022-02-24 | Yes |
| 608-998 | VIOLA | 516J | 2022-02-28 | Yes |
| 608-999 | MADISON | 225C | 2015-02-18 | 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.