MIDCONTINENT COMMUNICATIONS. - SD
34 prefixes in 605 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 605-213 | HARISBGTEA | 7076 | 2003-11-07 | — |
| 605-262 | ABERDEEN | 7076 | 2003-02-18 | — |
| 605-271 | SIOUX FLS | 7076 | 2004-10-29 | — |
| 605-274 | SIOUX FLS | 7076 | — | — |
| 605-275 | SIOUX FLS | 7076 | 2002-10-02 | — |
| 605-276 | ROSCOE | 7076 | 2016-02-02 | Yes |
| 605-292 | MITCHELL | 7076 | 2004-04-30 | — |
| 605-302 | REDFIELD | 7076 | 2003-04-17 | Yes |
| 605-410 | IPSWICH | 7076 | 2017-08-02 | Yes |
| 605-420 | ROSLYN | 7076 | 2016-02-02 | Yes |
| 605-435 | WAUBAY | 7076 | 2004-04-23 | Yes |
| 605-443 | SPEARFISH | 7076 | — | Yes |
| 605-444 | SIOUX FLS | 7076 | 2006-08-31 | — |
| 605-445 | MILBANK | 7076 | 2005-07-21 | — |
| 605-451 | WAKONDA | 7076 | 2007-10-09 | — |
| 605-465 | CROOKS | 7076 | 2009-08-17 | — |
| 605-494 | PIERRE | 7076 | 2007-03-05 | — |
| 605-497 | WOLSEY | 7076 | 2007-09-25 | — |
| 605-541 | BIGSTONECY | 7076 | 2008-07-09 | — |
| 605-548 | BALTIC | 7076 | 2009-04-24 | — |
| 605-554 | HURON | 7076 | 2006-10-10 | — |
| 605-556 | MADISON | 7076 | 2001-05-17 | Yes |
| 605-558 | CANTON | 7076 | 2001-05-17 | — |
| 605-559 | SPEARFISH | 7076 | 2006-10-06 | — |
| 605-561 | STURGIS | 7076 | 2006-10-06 | — |
| 605-568 | BELLEFORCH | 7076 | 2006-10-06 | — |
| 605-571 | SPEARFISH | 7076 | — | Yes |
| 605-588 | WEBSTER | 7076 | 2003-09-16 | Yes |
| 605-643 | SELBY | 7076 | 2016-02-02 | Yes |
| 605-658 | VERMILLION | 7076 | 2007-03-05 | — |
| 605-689 | YANKTON | 7076 | 2007-03-05 | — |
| 605-791 | RAPID CITY | 7076 | 2006-04-13 | — |
| 605-878 | WATERTOWN | 7076 | 2005-05-27 | — |
| 605-893 | MILLER | 7076 | 2006-12-13 | — |
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.