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 |
| 406-226
| 5 |
East Glacier Park |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-226
| 6 |
East Glacier Park |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-226
| 7 |
East Glacier Park |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2007-04-14 |
|
| 406-226
| 8 |
East Glacier Park |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2011-10-20 |
|
| 406-226
| 9 |
East Glacier Park |
MT |
|
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-227
| A |
Helena |
MT |
EHLNMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-228
| A |
Glasgow |
MT |
GLSGMTXCDS0 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 2 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 3 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 4 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 5 |
Glasgow |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2025-08-29 |
|
| 406-228
| 6 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 7 |
Glasgow |
MT |
|
7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. |
650 |
|
2019-04-09 |
|
| 406-228
| 8 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-228
| 9 |
Glasgow |
MT |
|
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-229
| A |
Cut Bank |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-229
| 0 |
Cut Bank |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-229
| 1 |
Cut Bank |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-229
| 2 |
Cut Bank |
MT |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2017-08-15 |
|
| 406-229
| 3 |
Cut Bank |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2012-12-17 |
|
| 406-229
| 4 |
Cut Bank |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-06-05 |
|
| 406-229
| 5 |
Cut Bank |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
2014-10-23 |
|
| 406-229
| 6 |
Cut Bank |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-229
| 7 |
Cut Bank |
MT |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-229
| 8 |
Cut Bank |
MT |
|
453F ONVOY, LLC - MT |
648 |
|
2020-04-04 |
|
| 406-229
| 9 |
Cut Bank |
MT |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2024-12-27 |
|
| 406-230
| A |
Glasgow |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-230
| 0 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-230
| 1 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-230
| 2 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-230
| 6 |
Glasgow |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2015-11-14 |
|
| 406-231
| A |
Great Falls |
MT |
MSSLMTAG5MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 0 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 1 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 2 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 3 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 4 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 5 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 6 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 7 |
Great Falls |
MT |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2026-01-21 |
|
| 406-231
| 8 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-231
| 9 |
Great Falls |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
648 |
|
|
|
| 406-232
| A |
Miles City |
MT |
MLCYMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-233
| A |
Miles City |
MT |
MLCYMTMADS0 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-233
| 0 |
Miles City |
MT |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-01-06 |
|
| 406-233
| 1 |
Miles City |
MT |
|
453F ONVOY, LLC - MT |
650 |
|
2006-10-20 |
|
| 406-233
| 2 |
Miles City |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-233
| 3 |
Miles City |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-233
| 4 |
Miles City |
MT |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-233
| 6 |
Miles City |
MT |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2005-02-21 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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