QWEST CORPORATION
104 prefixes in 605 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 605-223 | PIERRE | 9631 | — | Yes |
| 605-224 | PIERRE | 9631 | — | — |
| 605-225 | ABERDEEN | 9631 | — | — |
| 605-226 | ABERDEEN | 9631 | — | — |
| 605-229 | ABERDEEN | 9631 | — | Yes |
| 605-232 | NOSIOUX CY | 9631 | — | — |
| 605-235 | NOSIOUX CY | 9631 | — | — |
| 605-256 | MADISON | 9631 | — | — |
| 605-269 | SPEARFISH | 9631 | — | Yes |
| 605-273 | MCINTOSH | 9631 | — | Yes |
| 605-312 | SIOUX FLS | 9631 | 2007-10-02 | Yes |
| 605-322 | SIOUX FLS | 9631 | — | — |
| 605-323 | SIOUX FLS | 9631 | — | Yes |
| 605-328 | SIOUX FLS | 9631 | — | — |
| 605-330 | SIOUX FLS | 9631 | — | — |
| 605-331 | SIOUX FLS | 9631 | — | — |
| 605-332 | SIOUX FLS | 9631 | — | — |
| 605-333 | SIOUX FLS | 9631 | — | — |
| 605-334 | SIOUX FLS | 9631 | — | — |
| 605-335 | SIOUX FLS | 9631 | — | — |
| 605-336 | SIOUX FLS | 9631 | — | — |
| 605-338 | SIOUX FLS | 9631 | — | — |
| 605-339 | SIOUX FLS | 9631 | — | — |
| 605-341 | RAPID CITY | 9631 | — | — |
| 605-342 | RAPID CITY | 9631 | — | — |
| 605-343 | RAPID CITY | 9631 | — | — |
| 605-347 | STURGIS | 9631 | — | Yes |
| 605-348 | RAPID CITY | 9631 | — | — |
| 605-352 | HURON | 9631 | — | — |
| 605-353 | HURON | 9631 | — | Yes |
| 605-355 | RAPID CITY | 9631 | — | — |
| 605-356 | ELK POINT | 9631 | — | Yes |
| 605-357 | SIOUX FLS | 9631 | — | — |
| 605-361 | SIOUX FLS | 9631 | — | — |
| 605-362 | SIOUX FLS | 9631 | — | — |
| 605-367 | SIOUX FLS | 9631 | — | — |
| 605-368 | HARISBGTEA | 9631 | — | Yes |
| 605-371 | SIOUX FLS | 9631 | — | Yes |
| 605-373 | SIOUX FLS | 9631 | — | — |
| 605-377 | ABERDEEN | 9631 | — | Yes |
| 605-378 | NOVALENTIN | 9631 | — | — |
| 605-385 | RAPID CITY | 9631 | — | Yes |
| 605-388 | RAPID CITY | 9631 | — | Yes |
| 605-393 | RAPID CITY | 9631 | — | Yes |
| 605-394 | RAPID CITY | 9631 | — | — |
| 605-399 | RAPID CITY | 9631 | — | — |
| 605-404 | SIOUX FLS | 9631 | 2017-03-23 | Yes |
| 605-423 | STURGIS | 9631 | — | Yes |
| 605-432 | MILBANK | 9631 | — | Yes |
| 605-472 | REDFIELD | 9631 | — | Yes |
| 605-504 | SIOUX FLS | 9631 | 2016-08-31 | Yes |
| 605-509 | SIOUX FLS | 9631 | — | — |
| 605-524 | MCINTOSH | 9631 | — | Yes |
| 605-534 | FLANDREAU | 9631 | — | Yes |
| 605-546 | IROQUOIS | 9631 | — | Yes |
| 605-574 | HILL CITY | 9631 | — | Yes |
| 605-575 | SIOUX FLS | 9631 | — | — |
| 605-578 | SPEARFISH | 9631 | — | Yes |
| 605-584 | SPEARFISH | 9631 | — | — |
| 605-597 | MITCHELL | 9631 | 2010-07-20 | Yes |
| 605-599 | CAVOUR | 9631 | — | Yes |
| 605-622 | ABERDEEN | 9631 | — | Yes |
| 605-624 | VERMILLION | 9631 | — | — |
| 605-626 | ABERDEEN | 9631 | — | Yes |
| 605-627 | VOLGA | 9631 | — | Yes |
| 605-636 | MADISON | 9631 | — | Yes |
| 605-638 | VERMILLION | 9631 | — | Yes |
| 605-642 | SPEARFISH | 9631 | — | — |
| 605-644 | SPEARFISH | 9631 | — | Yes |
| 605-655 | YANKTON | 9631 | — | Yes |
| 605-665 | YANKTON | 9631 | — | — |
| 605-668 | YANKTON | 9631 | — | — |
| 605-677 | VERMILLION | 9631 | — | Yes |
| 605-679 | SIOUX FLS | 9631 | 2012-09-14 | Yes |
| 605-727 | RAPID CITY | 9631 | — | — |
| 605-731 | SIOUX FLS | 9631 | — | Yes |
| 605-734 | CHAMBERLAN | 9631 | — | Yes |
| 605-737 | RAPID CITY | 9631 | — | — |
| 605-743 | HARISBGTEA | 9631 | — | Yes |
| 605-773 | PIERRE | 9631 | — | — |
| 605-776 | PIERRE | 9631 | — | Yes |
| 605-782 | SIOUX FLS | 9631 | — | Yes |
| 605-786 | RAPID CITY | 9631 | — | Yes |
| 605-787 | RAPID CITY | 9631 | — | Yes |
| 605-847 | LK PRESTON | 9631 | — | Yes |
| 605-853 | MILLER | 9631 | — | Yes |
| 605-854 | DE SMET | 9631 | — | Yes |
| 605-862 | BIGSTONECY | 9631 | — | Yes |
| 605-865 | TIMBERLAKE | 9631 | — | Yes |
| 605-877 | RAPID CITY | 9631 | — | Yes |
| 605-882 | WATERTOWN | 9631 | — | — |
| 605-884 | WATERTOWN | 9631 | — | Yes |
| 605-886 | WATERTOWN | 9631 | — | — |
| 605-892 | BELLEFORCH | 9631 | — | Yes |
| 605-923 | RAPID CITY | 9631 | — | Yes |
| 605-945 | PIERRE | 9631 | — | Yes |
| 605-977 | SIOUX FLS | 9631 | — | — |
| 605-978 | SIOUX FLS | 9631 | — | — |
| 605-983 | ARLINGTON | 9631 | — | Yes |
| 605-987 | CANTON | 9631 | — | 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.