All assignees
799 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-600 | CLINTON | 225C | 2019-05-09 | Yes |
| 608-601 | MCFARLAND | 007F | 2021-11-12 | Yes |
| 608-602 | WAUNAKEE | 7216 | 2019-04-11 | Yes |
| 608-603 | JANESVILLE | 6630 | — | — |
| 608-604 | RICHLD CTR | 6274 | — | Yes |
| 608-605 | KENDALL | 225C | 2019-08-02 | Yes |
| 608-606 | VIROQUA | 6274 | — | Yes |
| 608-607 | JANESVILLE | 792K | 2019-08-06 | Yes |
| 608-608 | MADISON | 225C | 2024-08-07 | Yes |
| 608-609 | MADISON | 6534 | 2008-01-22 | Yes |
| 608-610 | LIME RIDGE | 6534 | 2019-11-21 | Yes |
| 608-611 | XXXXXXXXXX | MULT | — | — |
| 608-612 | WEST SALEM | 792K | 2005-12-02 | Yes |
| 608-613 | NEW LISBON | 6508 | 2013-08-21 | Yes |
| 608-614 | ONTARIO | 983F | 2020-01-14 | Yes |
| 608-615 | LA CROSSE | 6534 | 2016-04-07 | Yes |
| 608-616 | MADISON | 007F | 2008-10-10 | Yes |
| 608-617 | PORTAGE | 6274 | 2001-02-12 | Yes |
| 608-618 | EDGERTON | 007F | 2012-12-07 | Yes |
| 608-619 | COONVALLEY | 6274 | 2008-02-11 | Yes |
| 608-620 | MADISON | 7322 | 2010-10-25 | Yes |
| 608-621 | MADISON | 7229 | 2020-10-15 | Yes |
| 608-622 | MADISON | 6534 | 2008-08-04 | Yes |
| 608-623 | COBB | 0886 | — | Yes |
| 608-624 | SOLDIRSGRV | 0942 | — | — |
| 608-625 | LA FARGE | 0966 | — | — |
| 608-626 | WAUMANDEE | 0866 | — | — |
| 608-627 | VIOLA | 0966 | — | — |
| 608-628 | MADISON | 6534 | 2002-06-20 | Yes |
| 608-629 | READSTOWN | 0966 | — | — |
| 608-630 | MADISON | 792K | — | Yes |
| 608-631 | BELOIT | 6274 | 2019-09-09 | Yes |
| 608-632 | WESTBY | 6508 | — | Yes |
| 608-633 | SPARTA | 6508 | 2003-11-05 | Yes |
| 608-634 | WESTBY | 0966 | — | — |
| 608-635 | POYNETTE | 0922 | — | Yes |
| 608-636 | NEW GLARUS | 6508 | 2003-11-21 | Yes |
| 608-637 | VIROQUA | 0967 | — | — |
| 608-638 | VIROQUA | 717E | 2007-07-13 | — |
| 608-639 | LA FARGE | 6274 | 2008-10-08 | Yes |
| 608-640 | MADISON | 6274 | 2016-08-01 | Yes |
| 608-641 | BENTON | 983F | 2019-08-07 | Yes |
| 608-642 | PLATTEVL | 6508 | — | Yes |
| 608-643 | SAUK CITY | 0886 | — | Yes |
| 608-644 | SAUK CITY | 0886 | — | Yes |
| 608-645 | MONROE | 698E | 2008-05-22 | — |
| 608-646 | STOUGHTON | 829J | — | Yes |
| 608-647 | RICHLD CTR | 0886 | — | Yes |
| 608-648 | DE SOTO | 0966 | — | — |
| 608-649 | RICHLD CTR | 2556 | 2002-03-12 | — |
| 608-650 | NECEDAH | 983F | 2020-02-13 | Yes |
| 608-651 | RICHMOND | 792K | 2022-11-08 | Yes |
| 608-652 | NORWALK | 983F | 2020-01-14 | Yes |
| 608-653 | VERONA | 508J | 2017-10-04 | Yes |
| 608-654 | CASHTON | 0913 | — | Yes |
| 608-655 | MARSHALL | 0886 | — | Yes |
| 608-656 | MAUSTON | 983F | 2020-02-18 | Yes |
| 608-657 | MADISON | 6630 | — | — |
| 608-658 | MADISON | 6529 | 2001-02-05 | Yes |
| 608-659 | MINDORO | 792K | 2008-02-20 | Yes |
| 608-660 | WILTON | 983F | 2020-01-14 | Yes |
| 608-661 | MADISON | 520K | — | — |
| 608-662 | MIDDLETON | 520K | — | — |
| 608-663 | MADISON | 520K | — | — |
| 608-664 | MIDDLETON | 520K | — | — |
| 608-665 | MADISON | 520K | 2008-08-12 | Yes |
| 608-666 | LYNDON STA | 0886 | — | Yes |
| 608-667 | LA CROSSE | 6534 | — | Yes |
| 608-668 | LA CROSSE | 5489 | 2019-10-08 | Yes |
| 608-669 | MADISON | 7229 | 2003-07-15 | Yes |
| 608-670 | MOUNTHOREB | 792K | 2020-06-15 | Yes |
| 608-671 | BELOIT | 6274 | 2021-06-18 | Yes |
| 608-672 | CHASEBURG | 983F | 2020-04-01 | Yes |
| 608-673 | MADISON | 515J | 2021-05-03 | Yes |
| 608-674 | MILTON | 225C | 2021-07-14 | Yes |
| 608-675 | LIBETYPOLE | 0966 | — | — |
| 608-676 | CLINTON | 0886 | — | Yes |
| 608-677 | NO WARREN | 1036 | — | Yes |
| 608-678 | WISCONDLLS | 6534 | — | Yes |
| 608-679 | STODDARD | 983F | 2020-04-01 | Yes |
| 608-680 | BROOKLYN | 225C | 2019-05-09 | Yes |
| 608-681 | VIOLA | 983F | 2020-05-14 | Yes |
| 608-683 | PORTAGE | 6508 | 2012-10-01 | Yes |
| 608-684 | FOOTVILLE | 007F | 2019-08-01 | Yes |
| 608-685 | ALMA | 0958 | — | Yes |
| 608-686 | PORTAGE | 225C | 2020-04-13 | Yes |
| 608-687 | FOUNTAINCY | 1159 | — | — |
| 608-688 | COTTAGEGRV | 007F | 2015-01-26 | Yes |
| 608-689 | GENOA | 0966 | — | — |
| 608-690 | MADISON | 425J | 2020-07-08 | Yes |
| 608-691 | MT VERNON | 792K | 2009-10-30 | Yes |
| 608-692 | MADISON | 6534 | — | — |
| 608-693 | WESTBY | 6274 | 2017-04-03 | Yes |
| 608-694 | COTTAGEGRV | 225C | 2020-12-21 | Yes |
| 608-695 | MADISON | 6534 | — | — |
| 608-696 | SPARTA | 6534 | 2020-06-05 | Yes |
| 608-697 | PORTAGE | 6274 | — | Yes |
| 608-698 | MADISON | 6534 | — | — |
| 608-699 | CAMBRIDGE | 5489 | 2014-11-25 | Yes |
| 608-700 | — | — |
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.