All assignees
799 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-500 | BROOKS | 965H | 2020-10-16 | Yes |
| 608-501 | STOUGHTON | 7216 | 2009-10-14 | Yes |
| 608-502 | EVANSVILLE | 225C | 2021-06-24 | Yes |
| 608-503 | CASHTON | 983F | 2019-12-23 | Yes |
| 608-504 | MADISON | 225C | — | Yes |
| 608-505 | POYNETTE | 225C | 2021-07-02 | Yes |
| 608-506 | WONEWOC | 225C | 2021-07-02 | Yes |
| 608-507 | BOAZ | 508J | 2017-10-19 | Yes |
| 608-508 | WESTFIELD | 7216 | 2022-01-08 | Yes |
| 608-509 | MADISON | 6508 | 2006-05-17 | Yes |
| 608-510 | GRATIOT | 6534 | 2017-07-06 | Yes |
| 608-511 | XXXXXXXXXX | MULT | — | — |
| 608-512 | MADISON | 5489 | — | Yes |
| 608-513 | MADISON | 6274 | — | Yes |
| 608-514 | MADISON | 829J | 2008-02-14 | Yes |
| 608-515 | MADISON | 6529 | 2009-10-28 | Yes |
| 608-516 | MADISON | 6274 | — | Yes |
| 608-517 | FENNIMORE | 5489 | 2017-10-09 | Yes |
| 608-518 | LA CROSSE | 6508 | 2012-07-13 | Yes |
| 608-519 | LA CROSSE | 792K | 2005-08-04 | Yes |
| 608-520 | MADISON | 007F | 2010-09-07 | Yes |
| 608-521 | READSTOWN | 6274 | 2008-10-08 | Yes |
| 608-522 | NO FREEDOM | 0924 | — | — |
| 608-523 | BLANCHADVL | 0963 | — | Yes |
| 608-524 | REEDSBURG | 0886 | — | — |
| 608-525 | ETTRICK | 1159 | — | Yes |
| 608-526 | HOLMEN | 1159 | — | — |
| 608-527 | NEW GLARUS | 0917 | — | Yes |
| 608-528 | YUBA | 0966 | — | — |
| 608-529 | CUBA CITY | 983F | 2020-05-14 | Yes |
| 608-530 | JANESVILLE | 6534 | 2017-04-04 | Yes |
| 608-531 | JANESVILLE | 829J | — | Yes |
| 608-532 | AVOCA | 0922 | — | Yes |
| 608-533 | WOODMAN | 0930 | — | — |
| 608-534 | TREMPEALEU | 1159 | — | Yes |
| 608-535 | MADISON | 007F | 2010-08-06 | Yes |
| 608-536 | BOAZ | 0942 | — | — |
| 608-537 | BLUE RIVER | 0942 | — | — |
| 608-538 | SABIN | 0942 | — | — |
| 608-539 | CENTERVL | 1159 | — | — |
| 608-540 | HOLMEN | 6534 | 2018-10-08 | Yes |
| 608-541 | STOUGHTON | 829J | 2001-02-16 | Yes |
| 608-542 | CAMPDOUGLS | 6534 | — | — |
| 608-543 | ARGYLE | 1159 | — | Yes |
| 608-544 | WITWEN | 0886 | — | Yes |
| 608-545 | YUBA | 6274 | 2008-10-08 | Yes |
| 608-546 | PLAIN | 0886 | — | Yes |
| 608-547 | MAUSTON | 6274 | — | Yes |
| 608-548 | MAUSTON | 6274 | — | Yes |
| 608-549 | BLOOM CITY | 0886 | — | Yes |
| 608-550 | MADISON | 9748 | — | — |
| 608-551 | BRODHEAD | 516J | — | Yes |
| 608-552 | CAMPDOUGLS | 6534 | — | Yes |
| 608-553 | DODGEVILLE | 6508 | — | Yes |
| 608-554 | JANESVILLE | 5489 | 2003-02-05 | Yes |
| 608-555 | DIR ASST | MULT | — | — |
| 608-556 | MADISON | 6534 | — | Yes |
| 608-557 | WONEWOC | 698E | 2009-12-22 | Yes |
| 608-558 | MONROE | 6274 | — | Yes |
| 608-559 | MADISON | 9748 | — | — |
| 608-560 | NECEDAH | 0859 | 2013-05-02 | Yes |
| 608-561 | EDGERTON | 5489 | 2002-10-21 | Yes |
| 608-562 | NEW LISBON | 0900 | — | — |
| 608-563 | JANESVILLE | 792K | 2004-01-16 | Yes |
| 608-564 | MONROE CTR | 0886 | — | Yes |
| 608-565 | NECEDAH | 0859 | — | Yes |
| 608-566 | PORTAGE | 6529 | 2001-11-02 | Yes |
| 608-567 | TOMAH | 6529 | 2001-11-02 | Yes |
| 608-568 | DICKEYVL | 0875 | — | Yes |
| 608-569 | BAGLEY | 508J | 2017-10-09 | Yes |
| 608-570 | RICHLD CTR | 7216 | 2019-08-01 | Yes |
| 608-571 | MADISON | 227F | 2014-10-10 | Yes |
| 608-572 | MADISON | 6508 | — | Yes |
| 608-573 | POYNETTE | 6274 | 2014-09-04 | Yes |
| 608-574 | DODGEVILLE | 6274 | — | Yes |
| 608-575 | MADISON | 6274 | — | Yes |
| 608-576 | MADISON | 6274 | — | Yes |
| 608-577 | MADISON | 6274 | 2002-08-28 | Yes |
| 608-578 | MADISON | 6630 | — | — |
| 608-579 | MCFARLAND | 792K | 2007-01-10 | Yes |
| 608-580 | MILTON | 792K | 2006-11-30 | Yes |
| 608-581 | BARABOO | 6508 | 2015-11-11 | Yes |
| 608-582 | GALESVILLE | 1159 | — | — |
| 608-583 | LONE ROCK | 0886 | — | Yes |
| 608-584 | BROOKS | 0908 | — | — |
| 608-585 | ITHACA | 0886 | — | Yes |
| 608-586 | OXFORD | 0908 | — | — |
| 608-587 | ENDEAVOR | 0908 | — | — |
| 608-588 | SPG GREEN | 0886 | — | Yes |
| 608-589 | PACKWAUKEE | 0908 | — | — |
| 608-590 | MADISON | 225C | 2018-11-21 | Yes |
| 608-591 | LODI | 7216 | 2016-01-25 | Yes |
| 608-592 | LODI | 0886 | — | Yes |
| 608-593 | REEDSBURG | 698E | 2010-02-19 | Yes |
| 608-594 | PLAIN | 225C | 2020-12-21 | Yes |
| 608-595 | BLUE RIVER | 508J | 2017-10-19 | Yes |
| 608-596 | NOAPPLERIV | 1036 | — | Yes |
| 608-597 | MCFARLAND | 225C | 2018-07-24 | Yes |
| 608-598 | MADISON | 6274 | 2015-07-31 | Yes |
| 608-599 | JUDA | 792K | 2010-06-23 | 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.