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 |
| 406-709
| 5 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-14 |
|
| 406-709
| 6 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-709
| 7 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2007-11-17 |
|
| 406-709
| 8 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2011-05-14 |
|
| 406-709
| 9 |
Lakeside |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2020-08-13 |
|
| 406-717
| A |
Billings |
MT |
BLNGMT937MD |
197D VONAGE AMERICA LLC |
650 |
|
|
|
| 406-717
| 0 |
Billings |
MT |
BLNGMT937MD |
197D VONAGE AMERICA LLC |
650 |
|
2018-07-30 |
|
| 406-717
| 1 |
Billings |
MT |
BLNGMTWEDMD |
624H ONVOY SPECTRUM, LLC |
650 |
|
2022-11-12 |
|
| 406-717
| 2 |
Billings |
MT |
BLNGMTWEDMD |
624H ONVOY SPECTRUM, LLC |
650 |
|
2022-11-12 |
|
| 406-717
| 3 |
Billings |
MT |
BLNGMTWEDMD |
624H ONVOY SPECTRUM, LLC |
650 |
|
2022-11-12 |
|
| 406-717
| 4 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2022-01-14 |
|
| 406-717
| 5 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2022-01-14 |
|
| 406-717
| 6 |
Billings |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-04-04 |
|
| 406-717
| 7 |
Billings |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-04-04 |
|
| 406-717
| 8 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2021-03-12 |
|
| 406-717
| 9 |
Billings |
MT |
BLNGMTMAXMD |
6529 T-MOBILE USA, INC. |
650 |
|
2021-03-12 |
|
| 406-718
| A |
Darby |
MT |
GRFLMTMAPMD |
506J TWILIO INTERNATIONAL, INC. |
648 |
|
|
|
| 406-718
| 1 |
Darby |
MT |
MSSLMTEH4MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2024-09-08 |
|
| 406-718
| 4 |
Darby |
MT |
GRFLMTMAPMD |
506J TWILIO INTERNATIONAL, INC. |
648 |
|
2022-08-28 |
|
| 406-718
| 7 |
Darby |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-06-11 |
|
| 406-718
| 8 |
Darby |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-06-11 |
|
| 406-719
| A |
Fromberg |
MT |
BLNGMTASMMD |
506J TWILIO INTERNATIONAL, INC. |
650 |
|
|
|
| 406-719
| 0 |
Fromberg |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2019-10-21 |
|
| 406-719
| 1 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-719
| 2 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-719
| 3 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
| 406-719
| 4 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-10-20 |
|
| 406-719
| 5 |
Fromberg |
MT |
BLNGMTASMMD |
506J TWILIO INTERNATIONAL, INC. |
650 |
|
2022-08-28 |
|
| 406-719
| 6 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-10-20 |
|
| 406-719
| 7 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-01-05 |
|
| 406-719
| 8 |
Fromberg |
MT |
BLNGMT93BMD |
321J HD CARRIER LLC |
650 |
|
2020-09-27 |
|
| 406-719
| 9 |
Fromberg |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-02-11 |
|
| 406-720
| A |
Colstrip |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-720
| 0 |
Colstrip |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-720
| 1 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-720
| 2 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-720
| 3 |
Colstrip |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2012-09-10 |
|
| 406-720
| 4 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-720
| 5 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-720
| 6 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-720
| 7 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-720
| 8 |
Colstrip |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-720
| 9 |
Colstrip |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-721
| A |
Missoula |
MT |
MSSLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-722
| A |
Alberton |
MT |
ALTNMTXBRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 0 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 1 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 2 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 3 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 4 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 6 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 7 |
Alberton |
MT |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2025-04-28 |
|
| 406-722
| 8 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-722
| 9 |
Alberton |
MT |
|
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-723
| A |
Butte |
MT |
BUTTMT09DS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-724
| A |
Glentana |
MT |
GLNTMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-724
| 3 |
Glentana |
MT |
GLNTMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-724
| 7 |
Glentana |
MT |
GLSGMTXC1MD |
443B SAGEBRUSH CELLULAR, INC. |
650 |
|
|
|
| 406-725
| A |
Larslan |
MT |
LRSLMTXCRS1 |
2247 NEMONT TEL COOP INC |
650 |
|
|
|
| 406-726
| A |
Arlee |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-726
| 0 |
Arlee |
MT |
|
145J TERRA NOVA TELECOM INC. |
648 |
|
2025-10-09 |
|
| 406-726
| 1 |
Arlee |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2013-09-29 |
|
| 406-726
| 3 |
Arlee |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-726
| 4 |
Arlee |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-726
| 9 |
Arlee |
MT |
CLTNMTXCRS1 |
2235 BLACKFOOT TEL. COOP., INC. |
648 |
|
|
|
| 406-727
| A |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-728
| A |
Missoula |
MT |
MSSLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-729
| A |
Wilsall |
MT |
BLNGMTWE8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
|
|
| 406-729
| 0 |
Wilsall |
MT |
BLNGMT933MD |
073H TELNYX LLC |
650 |
|
2018-07-25 |
|
| 406-729
| 1 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-07-08 |
|
| 406-729
| 2 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2020-11-10 |
|
| 406-729
| 3 |
Wilsall |
MT |
BLNGMTMAMMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2023-09-21 |
|
| 406-729
| 4 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-729
| 5 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-19 |
|
| 406-729
| 6 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-729
| 7 |
Wilsall |
MT |
BLNGMTWE8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
650 |
|
2016-11-11 |
|
| 406-729
| 8 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2021-03-19 |
|
| 406-729
| 9 |
Wilsall |
MT |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
2023-08-20 |
|
| 406-730
| A |
Whitefish |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-730
| 0 |
Whitefish |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2020-08-13 |
|
| 406-730
| 1 |
Whitefish |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2008-05-05 |
|
| 406-730
| 2 |
Whitefish |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-04-21 |
|
| 406-730
| 3 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-730
| 4 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-730
| 5 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2007-03-08 |
|
| 406-730
| 6 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2012-12-15 |
|
| 406-730
| 7 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2010-11-28 |
|
| 406-730
| 8 |
Whitefish |
MT |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2013-11-11 |
|
| 406-730
| 9 |
Whitefish |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-28 |
|
| 406-731
| A |
Great Falls |
MT |
|
700J WAVENATION, LLC |
648 |
|
|
|
| 406-731
| 0 |
Great Falls |
MT |
|
700J WAVENATION, LLC |
648 |
|
2025-10-05 |
|
| 406-731
| 1 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 2 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 3 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 4 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 5 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 6 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 7 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-731
| 8 |
Great Falls |
MT |
GRFLMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
2004-07-12 |
|
| 406-732
| A |
St Mary |
MT |
STMYMTMARS1 |
9636 QWEST CORPORATION |
648 |
|
|
|
<< 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 >>
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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