Local Calling Guide
Area code/prefix search
NPA: 406
[Rate centres in NPA 406]
[Dial plan for NPA 406]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-333
| 3 |
Livingston |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2020-11-19 |
|
| 406-333
| 4 |
Livingston |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-333
| 5 |
Livingston |
MT |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2018-04-23 |
|
| 406-333
| 6 |
Livingston |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-03-24 |
|
| 406-333
| 7 |
Livingston |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2006-10-20 |
|
| 406-333
| 8 |
Livingston |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-07-10 |
|
| 406-333
| 9 |
Livingston |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-334
| A |
Libby |
MT |
CRALIDABXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
960 |
|
|
|
| 406-334
| 0 |
Libby |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
960 |
|
|
|
| 406-334
| 1 |
Libby |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
960 |
|
2005-12-12 |
|
| 406-334
| 2 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2020-09-06 |
|
| 406-334
| 3 |
Libby |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
960 |
|
2011-08-02 |
|
| 406-334
| 4 |
Libby |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
960 |
|
2014-10-23 |
|
| 406-334
| 5 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2011-04-08 |
|
| 406-334
| 6 |
Libby |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
960 |
|
2020-12-15 |
|
| 406-334
| 7 |
Libby |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
960 |
|
2013-03-12 |
|
| 406-334
| 8 |
Libby |
MT |
|
453F ONVOY, LLC - MT |
960 |
|
2019-10-12 |
|
| 406-334
| 9 |
Libby |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
960 |
|
2017-08-17 |
|
| 406-335
| A |
Sweetgrass |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-336
| A |
North Cut Bank |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-337
| A |
Kevin-Oilmont |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-338
| A |
Browning |
MT |
BRNGMTAQDS0 |
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 0 |
Browning |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-11-14 |
|
| 406-338
| 1 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 2 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 3 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 4 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 5 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 6 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 7 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 8 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-338
| 9 |
Browning |
MT |
|
619J SIYEH COMMUNICATIONS |
648 |
|
|
|
| 406-339
| A |
Ethridge |
MT |
SNBRMTXCDS0 |
2248 NORTHERN TEL. COOP., INC. |
648 |
|
|
|
| 406-340
| A |
Lima |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-340
| 0 |
Lima |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-341
| A |
Manhattan |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-341
| 0 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-341
| 1 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-08-20 |
|
| 406-341
| 2 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-08-20 |
|
| 406-341
| 3 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-22 |
|
| 406-341
| 4 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-341
| 5 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-341
| 6 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-22 |
|
| 406-341
| 7 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-22 |
|
| 406-341
| 8 |
Manhattan |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2021-02-22 |
|
| 406-341
| 9 |
Manhattan |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2021-02-22 |
|
| 406-342
| A |
Hysham |
MT |
HYSHMTXCRS1 |
2251 RANGE TEL COOP INC |
650 |
|
|
|
| 406-343
| A |
Wyola |
MT |
WYOLMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 0 |
Wyola |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-343
| 2 |
Wyola |
MT |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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