Local Calling Guide
Area code/prefix search
NPA: 406
[Rate centres in NPA 406]
[Dial plan for NPA 406]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-302
| A |
Wolf Creek |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-302
| 0 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-302
| 1 |
Wolf Creek |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2015-04-03 |
|
| 406-302
| 2 |
Wolf Creek |
MT |
|
073H TELNYX LLC |
648 |
|
2022-05-08 |
|
| 406-302
| 3 |
Wolf Creek |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2019-06-28 |
|
| 406-302
| 4 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-302
| 5 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-302
| 6 |
Wolf Creek |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-31 |
|
| 406-302
| 7 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-11-28 |
|
| 406-302
| 8 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-302
| 9 |
Wolf Creek |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-303
| A |
Missoula |
MT |
MSSLMTMAYMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
|
|
| 406-303
| 0 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-10-09 |
|
| 406-303
| 1 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-11-09 |
|
| 406-303
| 2 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-30 |
|
| 406-303
| 3 |
Missoula |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2015-02-20 |
|
| 406-303
| 4 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2019-11-18 |
|
| 406-303
| 5 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-30 |
|
| 406-303
| 6 |
Missoula |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2012-06-14 |
|
| 406-303
| 7 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-30 |
|
| 406-303
| 8 |
Missoula |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-11-30 |
|
| 406-303
| 9 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2021-10-18 |
|
| 406-304
| A |
Missoula |
MT |
MSSLMTMACMD |
6529 T-MOBILE USA, INC. |
648 |
|
|
|
| 406-304
| 0 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2020-12-20 |
|
| 406-304
| 1 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2020-09-21 |
|
| 406-304
| 2 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2020-01-16 |
|
| 406-304
| 3 |
Missoula |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2016-12-15 |
|
| 406-304
| 4 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2019-04-26 |
|
| 406-304
| 5 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2018-12-07 |
|
| 406-304
| 6 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2018-01-12 |
|
| 406-304
| 7 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2017-04-10 |
|
| 406-304
| 8 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2017-04-10 |
|
| 406-304
| 9 |
Missoula |
MT |
|
6529 T-MOBILE USA, INC. |
648 |
|
2016-06-30 |
|
| 406-305
| A |
White Sulphur Springs |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-305
| 0 |
White Sulphur Springs |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2010-12-17 |
|
| 406-305
| 1 |
White Sulphur Springs |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2019-01-11 |
|
| 406-306
| A |
Manhattan |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-306
| 0 |
Manhattan |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2018-06-07 |
|
| 406-306
| 1 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2017-12-22 |
|
| 406-306
| 2 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-306
| 3 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-306
| 4 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-306
| 5 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-306
| 6 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-306
| 7 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-04-04 |
|
| 406-306
| 8 |
Manhattan |
MT |
|
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-306
| 9 |
Manhattan |
MT |
|
073H TELNYX LLC |
650 |
|
2020-01-17 |
|
| 406-307
| A |
Canyon Creek |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2025-05-02 |
|
| 406-307
| 1 |
Canyon Creek |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2025-05-02 |
|
| 406-308
| A |
Cascade |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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