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 |
| 406-296
| 2 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2022-08-25 |
|
| 406-296
| 3 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2022-10-17 |
|
| 406-296
| 4 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2019-10-12 |
|
| 406-296
| 5 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2020-09-06 |
|
| 406-296
| 6 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2020-07-13 |
|
| 406-296
| 7 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2021-04-22 |
|
| 406-296
| 8 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2021-02-11 |
|
| 406-296
| 9 |
Eureka |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2021-02-11 |
|
| 406-297
| A |
Eureka Rural |
MT |
ERKRMTXCDS1 |
3959 INTERBEL TELEPHONE COOPERATIVE, INC. - MT |
648 |
|
|
|
| 406-298
| A |
Columbus |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-298
| 0 |
Columbus |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-298
| 1 |
Columbus |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2008-02-29 |
|
| 406-298
| 2 |
Columbus |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2020-08-09 |
|
| 406-298
| 3 |
Columbus |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-06-01 |
|
| 406-298
| 4 |
Columbus |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-298
| 5 |
Columbus |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-12-07 |
|
| 406-298
| 6 |
Columbus |
MT |
|
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-298
| 7 |
Columbus |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-298
| 8 |
Columbus |
MT |
|
073H TELNYX LLC |
650 |
|
2019-11-20 |
|
| 406-298
| 9 |
Columbus |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2024-12-13 |
|
| 406-299
| A |
Butte |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-299
| 0 |
Butte |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-07-14 |
|
| 406-299
| 1 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2006-05-27 |
|
| 406-299
| 2 |
Butte |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2007-01-02 |
|
| 406-299
| 3 |
Butte |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2012-03-05 |
|
| 406-299
| 4 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-299
| 5 |
Butte |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-299
| 6 |
Butte |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2014-10-20 |
|
| 406-299
| 7 |
Butte |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2015-06-27 |
|
| 406-299
| 8 |
Butte |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2013-02-28 |
|
| 406-299
| 9 |
Butte |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
|
|
| 406-300
| A |
Kalispell |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-300
| 0 |
Kalispell |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2016-05-06 |
|
| 406-300
| 1 |
Kalispell |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2013-09-13 |
|
| 406-300
| 2 |
Kalispell |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-07-14 |
|
| 406-300
| 3 |
Kalispell |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-05-15 |
|
| 406-300
| 4 |
Kalispell |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2016-07-29 |
|
| 406-300
| 5 |
Kalispell |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2017-11-20 |
|
| 406-300
| 6 |
Kalispell |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
648 |
|
2014-06-06 |
|
| 406-300
| 7 |
Kalispell |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-300
| 8 |
Kalispell |
MT |
|
5562 METROPCS, INC. |
648 |
|
2018-05-24 |
|
| 406-300
| 9 |
Kalispell |
MT |
|
5562 METROPCS, INC. |
648 |
|
2020-07-26 |
|
| 406-301
| A |
Malta |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-301
| 0 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2008-06-27 |
|
| 406-301
| 1 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-10-06 |
|
| 406-301
| 2 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-03-02 |
|
| 406-301
| 3 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-03-15 |
|
| 406-301
| 4 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-09-07 |
|
| 406-301
| 5 |
Malta |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2019-01-11 |
|
| 406-301
| 8 |
Malta |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2020-04-21 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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