CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
119 prefixes in 406 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 406-210 | SEELEYLAKE | 6564 | — | Yes |
| 406-214 | MISSOULA | 6564 | — | Yes |
| 406-217 | GREATFALLS | 6564 | — | Yes |
| 406-223 | LIVINGSTON | 6564 | — | — |
| 406-224 | LIVINGSTON | 6564 | — | Yes |
| 406-230 | GLASGOW | 6564 | — | Yes |
| 406-249 | KALISPELL | 6564 | — | — |
| 406-250 | KALISPELL | 6564 | — | — |
| 406-270 | KALISPELL | 6564 | — | — |
| 406-291 | LIBBY | 6564 | — | Yes |
| 406-298 | COLUMBUS | 6564 | — | Yes |
| 406-301 | MALTA | 6564 | 2008-05-06 | Yes |
| 406-308 | CASCADE | 6564 | 2017-09-05 | Yes |
| 406-320 | ROUNDUP | 6564 | — | Yes |
| 406-331 | ROUNDUP | 6564 | — | Yes |
| 406-344 | HAVRE | 6564 | — | Yes |
| 406-351 | FORSYTH | 6564 | — | Yes |
| 406-360 | HAMILTON | 6564 | — | — |
| 406-361 | HAMILTON | 6564 | 2011-06-09 | Yes |
| 406-366 | LEWISTOWN | 6564 | — | Yes |
| 406-370 | MISSOULA | 6564 | — | — |
| 406-380 | LEWISTOWN | 6564 | — | Yes |
| 406-381 | HAMILTON | 6564 | — | — |
| 406-390 | SOUTHHAVRE | 6564 | — | Yes |
| 406-396 | MISSOULA | 6564 | 2003-11-26 | — |
| 406-399 | SOUTHHAVRE | 6564 | — | Yes |
| 406-407 | KALISPELL | 6564 | 2010-08-16 | Yes |
| 406-408 | HAYS | 6564 | 2019-10-15 | Yes |
| 406-410 | HELENA | 6564 | — | Yes |
| 406-425 | RED LODGE | 6564 | — | Yes |
| 406-426 | RED LODGE | 6564 | — | Yes |
| 406-431 | HELENA | 6564 | — | — |
| 406-438 | HELENA | 6564 | 2014-02-06 | Yes |
| 406-450 | SHELBY | 6564 | — | Yes |
| 406-459 | HELENA | 6564 | — | — |
| 406-461 | HELENA | 6564 | — | — |
| 406-465 | HELENA | 6564 | — | — |
| 406-470 | SHELBY | 6564 | — | Yes |
| 406-471 | KALISPELL | 6564 | 2005-06-01 | — |
| 406-478 | SIDNEY | 6564 | — | Yes |
| 406-479 | BUTTE | 6564 | 2013-10-03 | Yes |
| 406-480 | SIDNEY | 6564 | — | Yes |
| 406-481 | MISSOULA | 6564 | 2023-06-21 | Yes |
| 406-490 | BUTTE | 6564 | — | — |
| 406-498 | BUTTE | 6564 | — | — |
| 406-517 | LIVINGSTON | 6564 | 2024-06-07 | Yes |
| 406-521 | TOWNSEND | 6564 | — | Yes |
| 406-529 | MISSOULA | 6564 | 2005-09-16 | — |
| 406-531 | MISSOULA | 6564 | — | — |
| 406-544 | MISSOULA | 6564 | — | — |
| 406-546 | MISSOULA | 6564 | — | — |
| 406-559 | ANACONDA | 6564 | — | Yes |
| 406-560 | ANACONDA | 6564 | — | Yes |
| 406-570 | BOZEMAN | 6564 | — | — |
| 406-579 | BOZEMAN | 6564 | — | — |
| 406-581 | BOZEMAN | 6564 | — | — |
| 406-590 | GREATFALLS | 6564 | — | — |
| 406-591 | BILLINGS | 6564 | — | — |
| 406-594 | HELENA | 6564 | — | — |
| 406-595 | BOZEMAN | 6564 | — | — |
| 406-598 | BILLINGS | 6564 | — | — |
| 406-599 | BOZEMAN | 6564 | 2004-10-26 | — |
| 406-600 | BOZEMAN | 6564 | 2006-04-13 | — |
| 406-621 | FORTBENTON | 6564 | — | Yes |
| 406-640 | WYELLOWSTN | 6564 | — | Yes |
| 406-641 | WYELLOWSTN | 6564 | — | Yes |
| 406-661 | BILLINGS | 6564 | — | Yes |
| 406-670 | BILLINGS | 6564 | — | — |
| 406-671 | BILLINGS | 6564 | — | — |
| 406-672 | BILLINGS | 6564 | — | — |
| 406-690 | BILLINGS | 6564 | — | — |
| 406-694 | BILLINGS | 6564 | 2005-01-05 | Yes |
| 406-696 | BILLINGS | 6564 | 2006-06-15 | — |
| 406-697 | BILLINGS | 6564 | 2005-04-21 | — |
| 406-698 | BILLINGS | 6564 | — | — |
| 406-720 | COLSTRIP | 6564 | — | Yes |
| 406-740 | COLSTRIP | 6564 | — | Yes |
| 406-750 | GREATFALLS | 6564 | 2005-08-22 | — |
| 406-780 | COLUMBUS | 6564 | — | Yes |
| 406-781 | GREATFALLS | 6564 | — | — |
| 406-788 | GREATFALLS | 6564 | — | — |
| 406-802 | HAMILTON | 6564 | — | Yes |
| 406-833 | RONAN | 6564 | — | Yes |
| 406-852 | MILES CITY | 6564 | — | Yes |
| 406-853 | MILES CITY | 6564 | — | Yes |
| 406-865 | DILLON | 6564 | — | Yes |
| 406-868 | GREATFALLS | 6564 | — | — |
| 406-871 | KALISPELL | 6564 | 2006-06-15 | — |
| 406-876 | BILLINGS | 6564 | — | Yes |
| 406-880 | MISSOULA | 6564 | — | — |
| 406-885 | KALISPELL | 6564 | — | — |
| 406-909 | COLUMBIFLS | 6564 | 2018-05-24 | Yes |
| 406-913 | ROUNDUP | 6564 | — | Yes |
| 406-914 | LAMBERT | 6564 | — | Yes |
| 406-915 | SO WOLF PT | 6564 | — | Yes |
| 406-920 | BOZEMAN | 6564 | — | Yes |
| 406-925 | DILLON | 6564 | — | Yes |
| 406-928 | GRASSRANGE | 6564 | — | Yes |
| 406-930 | BIG TIMBER | 6564 | — | Yes |
| 406-931 | BIG TIMBER | 6564 | — | 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.