All assignees
759 prefixes in 605 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 605-604 | BRANDON | 858J | 2021-12-08 | Yes |
| 605-605 | ABERDEEN | 162G | 2022-09-30 | Yes |
| 605-606 | SIOUX FLS | 624H | 2019-10-25 | Yes |
| 605-607 | SIOUX FLS | 321J | 2019-12-09 | Yes |
| 605-608 | RAPID CITY | 321J | 2019-12-23 | Yes |
| 605-609 | PIERRE | 5180 | — | — |
| 605-610 | SIOUX FLS | 5180 | — | Yes |
| 605-611 | XXXXXXXXXX | MULT | — | — |
| 605-613 | PLATTE | 6534 | 2010-10-20 | Yes |
| 605-614 | ARLINGTON | 7421 | 2026-06-16 | Yes |
| 605-615 | PINE RIDGE | 870F | 2018-10-10 | — |
| 605-616 | CANTON | 624H | 2021-06-23 | Yes |
| 605-617 | HILL CITY | 6701 | 2026-08-04 | Yes |
| 605-620 | LK PRESTON | 162G | — | Yes |
| 605-621 | MADISON | 907D | 2023-03-01 | Yes |
| 605-622 | ABERDEEN | 9631 | — | Yes |
| 605-623 | REVILLO | 1651 | — | — |
| 605-624 | VERMILLION | 9631 | — | — |
| 605-625 | BRYNTWLWLK | 1651 | — | — |
| 605-626 | ABERDEEN | 9631 | — | Yes |
| 605-627 | VOLGA | 9631 | — | Yes |
| 605-628 | BRYNTWLWLK | 1651 | — | — |
| 605-629 | WHITE | 1651 | — | — |
| 605-630 | MITCHELL | 6569 | — | Yes |
| 605-631 | SPEARFISH | 6569 | — | Yes |
| 605-632 | LK PRESTON | 920F | 2010-06-23 | Yes |
| 605-633 | FLANDREAU | 6569 | — | Yes |
| 605-634 | CAVOUR | 516J | 2022-01-13 | Yes |
| 605-635 | DOLAND | 1664 | — | Yes |
| 605-636 | MADISON | 9631 | — | Yes |
| 605-637 | NEWEFFNGTN | 1674 | — | — |
| 605-638 | VERMILLION | 9631 | — | Yes |
| 605-639 | SPEARFISH | 6569 | — | Yes |
| 605-640 | MCINTOSH | 580H | 2019-10-11 | Yes |
| 605-641 | SPEARFISH | 6534 | — | — |
| 605-642 | SPEARFISH | 9631 | — | — |
| 605-643 | SELBY | 7076 | 2016-02-02 | Yes |
| 605-644 | SPEARFISH | 9631 | — | Yes |
| 605-645 | SPEARFISH | 6569 | — | — |
| 605-646 | RAPID CITY | 106F | 2011-05-26 | Yes |
| 605-647 | LENNOX | 1652 | — | — |
| 605-648 | MARION | 1686 | — | — |
| 605-649 | SELBY | 1680 | — | — |
| 605-650 | SIOUX FLS | 114J | 2019-09-18 | Yes |
| 605-651 | BROOKINGS | 6569 | — | Yes |
| 605-652 | CLAIRECITY | 1674 | — | — |
| 605-653 | YANKTON | 106F | — | Yes |
| 605-654 | BONESTEEL | 1686 | — | — |
| 605-655 | YANKTON | 9631 | — | Yes |
| 605-656 | MITCHELL | 6569 | — | Yes |
| 605-657 | WATERTOWN | 162G | 2020-11-12 | Yes |
| 605-658 | VERMILLION | 7076 | 2007-03-05 | — |
| 605-659 | VERMILLION | 6569 | — | Yes |
| 605-660 | YANKTON | 6569 | — | — |
| 605-661 | YANKTON | 6534 | — | — |
| 605-662 | EDGEMONT | 1659 | — | — |
| 605-663 | HURON | 580H | 2021-03-31 | Yes |
| 605-664 | YANKTON | 7024 | — | — |
| 605-665 | YANKTON | 9631 | — | — |
| 605-666 | KEYSTONE | 1660 | — | — |
| 605-667 | HARISBGTEA | 965H | 2019-01-28 | Yes |
| 605-668 | YANKTON | 9631 | — | — |
| 605-669 | MURDO | 1686 | — | — |
| 605-670 | VERMILLION | 6569 | — | Yes |
| 605-671 | COLTON | 6701 | 2016-04-25 | Yes |
| 605-672 | VERMILLION | 7024 | — | — |
| 605-673 | CUSTER | 1686 | — | — |
| 605-674 | BIGSTONECY | 162G | 2020-02-18 | Yes |
| 605-675 | VERMILLION | 6701 | — | Yes |
| 605-676 | STOCKHOLM | 1651 | — | — |
| 605-677 | VERMILLION | 9631 | — | Yes |
| 605-678 | W MARIETTA | 1389 | — | — |
| 605-679 | SIOUX FLS | 9631 | 2012-09-14 | Yes |
| 605-680 | KIMBALL | 6569 | — | Yes |
| 605-681 | SIOUX FLS | 551G | 2013-03-08 | Yes |
| 605-682 | KIMBALL | 6569 | — | Yes |
| 605-683 | VIVIAN | 1686 | — | — |
| 605-684 | FLANDREAU | 7024 | — | — |
| 605-685 | MARTIN | 1659 | — | — |
| 605-686 | ESTELLINE | 920F | 2010-08-04 | Yes |
| 605-687 | SOVENTURIA | 1611 | — | — |
| 605-688 | BROOKINGS | 1650 | — | — |
| 605-689 | YANKTON | 7076 | 2007-03-05 | — |
| 605-690 | BROOKINGS | 6534 | — | — |
| 605-691 | BROOKINGS | 6701 | — | Yes |
| 605-692 | BROOKINGS | 1650 | — | — |
| 605-693 | BROOKINGSR | 1651 | — | — |
| 605-694 | WBROWNSVLY | 1495 | — | — |
| 605-695 | BROOKINGS | 6569 | — | — |
| 605-696 | BROOKINGS | 1650 | — | — |
| 605-697 | BROOKINGS | 1650 | — | — |
| 605-698 | SISSETON | 1680 | — | — |
| 605-699 | BELLEFORCH | 106F | 2011-03-16 | Yes |
| 605-700 | — | — | ||
| 605-701 | FLANDREAU | 781K | 2025-04-01 | Yes |
| 605-702 | STURGIS | 162G | — | Yes |
| 605-705 | SIOUX FLS | 939H | 2019-06-19 | Yes |
| 605-709 | HARISBGTEA | 495J | 2021-03-19 | Yes |
| 605-710 | LAKENORDEN | 920F | 2010-08-04 | Yes |
| 605-711 | XXXXXXXXXX | MULT | — | — |
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.