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 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-634
| 3 |
Helena |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-09-06 |
|
| 406-634
| 4 |
Helena |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-09-06 |
|
| 406-634
| 5 |
Helena |
MT |
GRFLMTMA69Z |
490J DISH WIRELESS, LLC |
648 |
|
2023-08-21 |
|
| 406-635
| A |
Terry |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-635
| 0 |
Terry |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-635
| 1 |
Terry |
MT |
BLNGMT93DS0 |
588H AIRUS, INC. - MT |
650 |
|
2021-02-18 |
|
| 406-635
| 2 |
Terry |
MT |
|
145J TERRA NOVA TELECOM INC. |
650 |
|
2021-11-04 |
|
| 406-635
| 3 |
Terry |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-08 |
|
| 406-635
| 4 |
Terry |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-635
| 5 |
Terry |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-635
| 6 |
Terry |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2018-12-17 |
|
| 406-635
| 7 |
Terry |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-635
| 8 |
Terry |
MT |
BLNGMT93DS0 |
588H AIRUS, INC. - MT |
650 |
|
2018-03-02 |
|
| 406-635
| 9 |
Terry |
MT |
WGLNMTXCDS2 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-636
| A |
Lavina |
MT |
RNDPMTXCDS0 |
2246 MID-RIVERS TEL. COOP., INC. |
650 |
|
|
|
| 406-637
| A |
Terry |
MT |
TRRYMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-637
| 3 |
Terry |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2012-02-10 |
|
| 406-637
| 4 |
Terry |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-637
| 5 |
Terry |
MT |
TRRYMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-637
| 6 |
Terry |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-637
| 7 |
Terry |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2011-10-24 |
|
| 406-637
| 8 |
Terry |
MT |
BLNGMT93DS0 |
588H AIRUS, INC. - MT |
650 |
|
2019-05-11 |
|
| 406-638
| A |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 0 |
Hardin |
MT |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-10-10 |
|
| 406-638
| 1 |
Hardin |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-09-05 |
|
| 406-638
| 2 |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 3 |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 4 |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 5 |
Hardin |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-638
| 6 |
Hardin |
MT |
BLNGMTWEBMD |
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2020-08-07 |
|
| 406-638
| 7 |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 8 |
Hardin |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-638
| 9 |
Hardin |
MT |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-639
| A |
Lodge Grass |
MT |
LDGSMTXCRS1 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-640
| A |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-640
| 0 |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-640
| 1 |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-640
| 2 |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-640
| 3 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2010-02-20 |
|
| 406-640
| 4 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2011-01-10 |
|
| 406-640
| 5 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2022-02-12 |
|
| 406-640
| 6 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-08 |
|
| 406-640
| 7 |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2022-06-18 |
|
| 406-640
| 8 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2014-03-31 |
|
| 406-640
| 9 |
West Yellowstone |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-641
| A |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-641
| 0 |
West Yellowstone |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-641
| 1 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-641
| 2 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2015-06-05 |
|
| 406-641
| 3 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-641
| 4 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-641
| 5 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-641
| 6 |
West Yellowstone |
MT |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2025-02-17 |
|
| 406-641
| 7 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2011-10-24 |
|
| 406-641
| 8 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-641
| 9 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-07 |
|
| 406-642
| A |
Victor |
MT |
VCTRMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-642
| 0 |
Victor |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-642
| 2 |
Victor |
MT |
VCTRMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-642
| 3 |
Victor |
MT |
VCTRMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-642
| 4 |
Victor |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-642
| 5 |
Victor |
MT |
HLNAMTMAUMD |
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-642
| 6 |
Victor |
MT |
VCTRMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-642
| 7 |
Victor |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2007-03-19 |
|
| 406-642
| 8 |
Victor |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2011-10-24 |
|
| 406-642
| 9 |
Victor |
MT |
VCTRMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-643
| A |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
|
|
| 406-643
| 0 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2012-12-17 |
|
| 406-643
| 1 |
North Parkman |
MT |
CHYNWYRF1MD |
073H TELNYX LLC |
654 |
|
2018-07-25 |
|
| 406-643
| 2 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2021-02-11 |
|
| 406-643
| 3 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2021-02-11 |
|
| 406-643
| 4 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2020-11-10 |
|
| 406-643
| 5 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2021-07-05 |
|
| 406-643
| 6 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2019-09-15 |
|
| 406-643
| 7 |
North Parkman |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2007-07-18 |
|
| 406-643
| 8 |
North Parkman |
MT |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-07-19 |
|
| 406-643
| 9 |
North Parkman |
MT |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-11-14 |
|
| 406-644
| A |
Charlo |
MT |
CHRLMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-644
| 1 |
Charlo |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2013-08-25 |
|
| 406-644
| 2 |
Charlo |
MT |
CHRLMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-644
| 3 |
Charlo |
MT |
CHRLMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-644
| 4 |
Charlo |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-644
| 9 |
Charlo |
MT |
CHRLMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-645
| A |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
|
|
| 406-645
| 2 |
Deer Lodge |
MT |
HLNAMTMAZMD |
624H ONVOY SPECTRUM, LLC |
648 |
|
2025-01-02 |
|
| 406-645
| 4 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-645
| 5 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-645
| 6 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-645
| 7 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-645
| 8 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2020-11-08 |
|
| 406-645
| 9 |
Deer Lodge |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-646
| A |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-646
| 0 |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-646
| 1 |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-646
| 2 |
West Yellowstone |
MT |
BLNGMTWE6MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2004-11-13 |
|
| 406-646
| 3 |
West Yellowstone |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2007-03-19 |
|
| 406-646
| 4 |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-646
| 5 |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-646
| 6 |
West Yellowstone |
MT |
BLNGMTMALMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2009-02-13 |
|
| 406-646
| 7 |
West Yellowstone |
MT |
WYLWMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
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Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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