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 |
| 406-489
| A |
Sidney |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-489
| 0 |
Sidney |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-489
| 1 |
Sidney |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-489
| 2 |
Sidney |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-489
| 3 |
Sidney |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-489
| 5 |
Sidney |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2023-06-24 |
|
| 406-489
| 6 |
Sidney |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2024-09-14 |
|
| 406-489
| 8 |
Sidney |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-01-23 |
|
| 406-489
| 9 |
Sidney |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2025-10-10 |
|
| 406-490
| A |
Butte |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-491
| A |
Butte |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 0 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 1 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 2 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 3 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 4 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 5 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 6 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 7 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-491
| 8 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2016-01-29 |
|
| 406-491
| 9 |
Butte |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2023-10-02 |
|
| 406-492
| A |
Avon |
MT |
AVONMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-493
| A |
Missoula |
MT |
MSSLMTEH4MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-493
| 0 |
Missoula |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-06-19 |
|
| 406-493
| 1 |
Missoula |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2007-10-01 |
|
| 406-493
| 2 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-04-09 |
|
| 406-493
| 3 |
Missoula |
MT |
|
9636 QWEST CORPORATION |
648 |
|
2009-03-30 |
|
| 406-493
| 4 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-06-08 |
|
| 406-493
| 5 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-08-24 |
|
| 406-493
| 6 |
Missoula |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2005-08-13 |
|
| 406-493
| 7 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-10-10 |
|
| 406-493
| 8 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-10-29 |
|
| 406-493
| 9 |
Missoula |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-12-07 |
|
| 406-494
| A |
Butte |
MT |
BUTTMT18RS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| A |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 0 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 1 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 2 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 3 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 5 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 6 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 7 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 8 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-495
| 9 |
Helena |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| A |
Butte |
MT |
BUTTMT09DS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| 0 |
Butte |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| 1 |
Butte |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| 2 |
Butte |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| 3 |
Butte |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-496
| 4 |
Butte |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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