All assignees
759 prefixes in 605 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 605-824 | ABERDEEN | 6569 | 2014-11-12 | Yes |
| 605-825 | CLAYTON | 1669 | — | — |
| 605-826 | SINAI | 1651 | — | — |
| 605-827 | VOLGA | 363J | 2018-12-06 | Yes |
| 605-828 | MISSION | 6534 | 2005-04-13 | Yes |
| 605-830 | GREGORY | 6569 | — | Yes |
| 605-831 | GREGORY | 6569 | — | Yes |
| 605-832 | ASTORIA | 1651 | — | — |
| 605-833 | BUFFALOGAP | 1659 | — | — |
| 605-834 | NORTHNAPER | 1525 | — | — |
| 605-835 | GREGORY | 1686 | — | — |
| 605-836 | CANTON | 7229 | — | Yes |
| 605-837 | KADOKA | 1667 | — | — |
| 605-838 | SIOUX FLS | 162G | 2008-06-17 | Yes |
| 605-839 | BRANDON | 6534 | 2011-04-08 | Yes |
| 605-840 | WINNER | 6569 | — | Yes |
| 605-841 | WINNER | 6569 | — | Yes |
| 605-842 | WINNER | 1686 | — | — |
| 605-843 | MIDLAND | 1659 | — | — |
| 605-844 | CLARK | 6534 | 2010-10-20 | Yes |
| 605-845 | MOBRIDGE | 1671 | — | — |
| 605-846 | ABERDEEN | 6569 | 2017-12-26 | Yes |
| 605-847 | LK PRESTON | 9631 | — | Yes |
| 605-848 | GLENHAM | 6569 | — | Yes |
| 605-849 | ALPENA | 1676 | — | — |
| 605-850 | GLENHAM | 6569 | — | Yes |
| 605-851 | HOWARD | 6569 | 2014-06-13 | Yes |
| 605-852 | HIGHMORE | 1680 | — | — |
| 605-853 | MILLER | 9631 | — | Yes |
| 605-854 | DE SMET | 9631 | — | Yes |
| 605-855 | SO REEDER | 1607 | — | — |
| 605-856 | MISSION | 1686 | — | — |
| 605-857 | YANKTON | 6534 | 2001-11-12 | Yes |
| 605-858 | RAPID CITY | 6534 | 2010-07-12 | Yes |
| 605-859 | PHILIP | 1659 | — | — |
| 605-860 | DE SMET | 6569 | — | Yes |
| 605-861 | DE SMET | 6569 | — | Yes |
| 605-862 | BIGSTONECY | 9631 | — | Yes |
| 605-863 | RAPID CITY | 6534 | 2003-10-21 | Yes |
| 605-864 | FLANDREAU | 6569 | — | Yes |
| 605-865 | TIMBERLAKE | 9631 | — | Yes |
| 605-866 | SORUM | 1689 | — | — |
| 605-867 | PINE RIDGE | 1659 | — | — |
| 605-868 | WATERTOWN | 6701 | — | Yes |
| 605-869 | KENNEBEC | 1668 | — | — |
| 605-870 | HIGHMORE | 6569 | — | Yes |
| 605-871 | HIGHMORE | 6569 | — | Yes |
| 605-872 | RAPID CITY | 6701 | 2017-01-26 | Yes |
| 605-873 | ESTELLINE | 1651 | — | — |
| 605-874 | CLEAR LAKE | 1651 | — | — |
| 605-875 | HARROLD | 1680 | — | — |
| 605-876 | BRANDT | 1651 | — | — |
| 605-877 | RAPID CITY | 9631 | — | Yes |
| 605-878 | WATERTOWN | 7076 | 2005-05-27 | — |
| 605-879 | WITTEN | 1686 | — | — |
| 605-880 | WATERTOWN | 6569 | — | — |
| 605-881 | WATERTOWN | 6534 | — | — |
| 605-882 | WATERTOWN | 9631 | — | — |
| 605-883 | WOLSEY | 1676 | — | — |
| 605-884 | WATERTOWN | 9631 | — | Yes |
| 605-885 | HOUGHTON | 1664 | — | Yes |
| 605-886 | WATERTOWN | 9631 | — | — |
| 605-887 | MELLETTE | 1664 | — | Yes |
| 605-888 | CHAMBERLAN | 162G | 2012-11-19 | Yes |
| 605-889 | POLLOCK | 1685 | — | — |
| 605-890 | HOTSPRINGS | 6569 | — | Yes |
| 605-891 | HOTSPRINGS | 6569 | — | Yes |
| 605-892 | BELLEFORCH | 9631 | — | Yes |
| 605-893 | MILLER | 7076 | 2006-12-13 | — |
| 605-894 | PUKWANA | 1670 | — | — |
| 605-895 | PRESHO | 1668 | — | — |
| 605-897 | TURTON | 1664 | — | Yes |
| 605-898 | IROQUOIS | 516J | 2022-01-14 | Yes |
| 605-899 | MARTIN | 6534 | 2010-10-25 | Yes |
| 605-900 | SIOUX FLS | 965H | 2019-01-25 | Yes |
| 605-902 | WATERTOWN | 106F | 2022-07-21 | Yes |
| 605-905 | STURGIS | 162G | 2022-11-23 | Yes |
| 605-906 | SIOUX FLS | 693G | 2012-02-06 | Yes |
| 605-909 | HILL CITY | 516J | 2022-03-10 | Yes |
| 605-910 | SIOUX FLS | 162G | 2021-04-16 | Yes |
| 605-911 | XXXXXXXXXX | MULT | — | — |
| 605-920 | SPEARFISH | 6569 | — | Yes |
| 605-922 | ELKTON | 920F | 2010-08-04 | Yes |
| 605-923 | RAPID CITY | 9631 | — | Yes |
| 605-924 | MILBANK | 6569 | 2008-08-19 | Yes |
| 605-925 | FREEMAN | 1686 | — | — |
| 605-926 | MOBRIDGE | 6534 | 2010-10-25 | Yes |
| 605-927 | SISSETON | 6534 | 2010-10-20 | Yes |
| 605-928 | PARKSTON | 1676 | — | — |
| 605-929 | SIOUX FLS | 6569 | — | — |
| 605-930 | VOLGA | 508J | — | Yes |
| 605-931 | HURON | 6569 | 2016-02-04 | Yes |
| 605-932 | PEEVER | 1674 | — | — |
| 605-933 | MITCHELL | 6534 | 2002-05-13 | Yes |
| 605-934 | ALCESTER | 1642 | — | — |
| 605-935 | TRIPP | 1676 | — | — |
| 605-936 | HURON | 6569 | 2012-09-24 | Yes |
| 605-937 | SIOUX FLS | 106F | — | Yes |
| 605-938 | WILMOT | 1674 | — | — |
| 605-939 | RAPID CITY | 7421 | — | 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.