All assignees
759 prefixes in 605 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 605-200 | DUPREE | 6534 | 2003-01-21 | Yes |
| 605-201 | SIOUX FLS | 6534 | — | — |
| 605-202 | VERMILLION | 6534 | 2002-09-23 | Yes |
| 605-203 | LK PRESTON | 6534 | 2002-09-23 | Yes |
| 605-204 | MILLER | 6534 | 2002-09-23 | Yes |
| 605-205 | ELK POINT | 6534 | 2003-03-18 | Yes |
| 605-206 | STURGIS | 6534 | 2003-03-18 | Yes |
| 605-207 | PLATTE | 6534 | 2001-02-14 | Yes |
| 605-208 | WINNER | 6534 | 2003-05-13 | Yes |
| 605-209 | RAPID CITY | 6534 | — | — |
| 605-210 | BELLEFORCH | 6534 | — | Yes |
| 605-211 | XXXXXXXXXX | MULT | — | — |
| 605-212 | SIOUX FLS | 6569 | 2003-11-06 | — |
| 605-213 | HARISBGTEA | 7076 | 2003-11-07 | — |
| 605-214 | HARISBGTEA | 6569 | 2004-03-18 | Yes |
| 605-215 | SIOUX FLS | 6701 | 2009-12-19 | Yes |
| 605-216 | ABERDEEN | 6534 | — | — |
| 605-217 | NOSIOUX CY | 7021 | — | — |
| 605-218 | EAGLEBUTTE | 6569 | 2013-07-17 | Yes |
| 605-219 | RAPID CITY | 6569 | 2014-11-12 | Yes |
| 605-220 | PIERRE | 6569 | — | Yes |
| 605-221 | SIOUX FLS | 829J | 2001-03-16 | Yes |
| 605-222 | PIERRE | 6569 | — | — |
| 605-223 | PIERRE | 9631 | — | Yes |
| 605-224 | PIERRE | 9631 | — | — |
| 605-225 | ABERDEEN | 9631 | — | — |
| 605-226 | ABERDEEN | 9631 | — | — |
| 605-227 | ETHAN | 1676 | — | — |
| 605-228 | ABERDEEN | 6569 | — | — |
| 605-229 | ABERDEEN | 9631 | — | Yes |
| 605-230 | MOBRIDGE | 6534 | 2003-01-21 | Yes |
| 605-231 | SIOUX FLS | 6701 | — | Yes |
| 605-232 | NOSIOUX CY | 9631 | — | — |
| 605-233 | CLARK | 6534 | 2003-08-07 | Yes |
| 605-234 | CHAMBERLAN | 9001 | 2001-10-17 | — |
| 605-235 | NOSIOUX CY | 9631 | — | — |
| 605-236 | MT VERNON | 1676 | — | — |
| 605-237 | WATERTOWN | 6569 | — | — |
| 605-238 | HURLEY | 1652 | — | — |
| 605-239 | ALEXANDRIA | 1669 | — | — |
| 605-240 | SALEM | 6534 | 2004-10-07 | Yes |
| 605-241 | SIOUX FLS | 8812 | — | — |
| 605-242 | NOSIOUX CY | 7010 | — | — |
| 605-243 | NEWHOLLAND | 1670 | — | — |
| 605-244 | BISON | 1689 | — | — |
| 605-245 | FTTHOMPSON | 1670 | — | — |
| 605-246 | SPENCER | 1669 | — | — |
| 605-247 | CENTER | 1669 | — | — |
| 605-248 | LETCHER | 1676 | — | — |
| 605-249 | WHITE LAKE | 1670 | — | — |
| 605-250 | SIOUX FLS | 162G | 2017-05-25 | Yes |
| 605-251 | SIOUX FLS | 6534 | — | Yes |
| 605-252 | ABERDEEN | 6534 | — | Yes |
| 605-253 | ALSEN | 1652 | — | — |
| 605-254 | SIOUX FLS | 7421 | — | Yes |
| 605-255 | HERMOSA | 1660 | — | — |
| 605-256 | MADISON | 9631 | — | — |
| 605-257 | NISLAND | 1689 | — | — |
| 605-258 | ONIDA | 1680 | — | — |
| 605-259 | WHITERIVER | 1659 | — | — |
| 605-260 | YANKTON | 7024 | — | — |
| 605-261 | SIOUX FLS | 6569 | 2003-02-12 | — |
| 605-262 | ABERDEEN | 7076 | 2003-02-18 | — |
| 605-263 | IRENE | 1652 | — | — |
| 605-264 | ONIDA | 1680 | — | — |
| 605-265 | WEBSTER | 6534 | 2003-08-08 | Yes |
| 605-266 | HITCHCOCK | 1680 | — | — |
| 605-267 | WAKONDA | 1652 | — | — |
| 605-268 | SISSETON | 6534 | 2003-01-21 | Yes |
| 605-269 | SPEARFISH | 9631 | — | Yes |
| 605-270 | MADISON | 6569 | — | Yes |
| 605-271 | SIOUX FLS | 7076 | 2004-10-29 | — |
| 605-272 | GARY | 1651 | — | — |
| 605-273 | MCINTOSH | 9631 | — | Yes |
| 605-274 | SIOUX FLS | 7076 | — | — |
| 605-275 | SIOUX FLS | 7076 | 2002-10-02 | — |
| 605-276 | ROSCOE | 7076 | 2016-02-02 | Yes |
| 605-277 | ABERDEEN | 5180 | 2003-02-10 | Yes |
| 605-278 | SOSCRANTON | 1607 | — | — |
| 605-279 | WALL | 1659 | — | — |
| 605-280 | PIERRE | 6534 | — | — |
| 605-281 | BOWDLE | 6569 | — | Yes |
| 605-282 | BOWDLE | 6569 | — | Yes |
| 605-283 | HOSMER | 1685 | — | — |
| 605-284 | EUREKA | 1685 | — | — |
| 605-285 | BOWDLE | 1680 | — | — |
| 605-286 | AVON | 1686 | — | — |
| 605-287 | ROSCOE | 1680 | — | — |
| 605-288 | NO GORDON | 1577 | — | — |
| 605-289 | SO ASHLEY | 1611 | — | — |
| 605-290 | ABERDEEN | 6569 | — | Yes |
| 605-291 | MADISON | 6569 | — | Yes |
| 605-292 | MITCHELL | 7076 | 2004-04-30 | — |
| 605-293 | GANNVALLEY | 1670 | — | — |
| 605-294 | CLAREMONT | 1664 | — | Yes |
| 605-295 | PIERRE | 6534 | 2003-10-21 | Yes |
| 605-296 | CANISTOTA | 1640 | — | — |
| 605-297 | PARKER | 1652 | — | — |
| 605-298 | ANDOVER | 1664 | — | Yes |
| 605-299 | MITCHELL | 5180 | 2003-02-11 | 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.