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 98 99 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-839
| 8 |
Billings |
MT |
BLNGMTWEIMD |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2008-10-10 |
|
| 406-839
| 9 |
Billings |
MT |
BLNGMT93HMD |
792K CHARTER IP ENABLED SERVICES, LLC |
650 |
|
2006-11-21 |
|
| 406-840
| A |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
|
|
| 406-840
| 0 |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2012-12-17 |
|
| 406-840
| 1 |
Silvertip |
MT |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-11-14 |
|
| 406-840
| 2 |
Silvertip |
MT |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-11-14 |
|
| 406-840
| 3 |
Silvertip |
MT |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-07-19 |
|
| 406-840
| 4 |
Silvertip |
MT |
CHYNWYMAQMD |
994E BANDWIDTH.COM CLEC, LLC - MT |
654 |
|
2012-04-15 |
|
| 406-840
| 5 |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2019-09-15 |
|
| 406-840
| 6 |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2019-09-15 |
|
| 406-840
| 7 |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2007-07-15 |
|
| 406-840
| 8 |
Silvertip |
MT |
CHYNWYMAX2X |
453F ONVOY, LLC - MT |
654 |
|
2011-07-11 |
|
| 406-841
| A |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 0 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 1 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 2 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 3 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 4 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 5 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 7 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 8 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-841
| 9 |
Helena |
MT |
HLNAMTMADS0 |
9636 QWEST CORPORATION |
648 |
|
|
|
| 406-842
| A |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 1 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 2 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 3 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 4 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 5 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 6 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 7 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 8 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-842
| 9 |
Sheridan |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-843
| A |
Virginia City |
MT |
FRFDMTXCDS1 |
2255 3 RIVERS TEL. COOP., INC. |
648 |
|
|
|
| 406-844
| A |
Lakeside |
MT |
LKSDMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-844
| 0 |
Lakeside |
MT |
LKSDMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-844
| 1 |
Lakeside |
MT |
CHRLMT010MD |
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2020-07-05 |
|
| 406-844
| 2 |
Lakeside |
MT |
LKSDMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-844
| 3 |
Lakeside |
MT |
LKSDMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-844
| 4 |
Lakeside |
MT |
LKSDMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-844
| 5 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-844
| 6 |
Lakeside |
MT |
MSSLMTMA0MD |
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2023-02-27 |
|
| 406-844
| 8 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-844
| 9 |
Lakeside |
MT |
GRFLMTMA7MD |
453F ONVOY, LLC - MT |
648 |
|
2021-03-07 |
|
| 406-845
| A |
Cut Bank |
MT |
HLNAMTHH5MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-845
| 0 |
Cut Bank |
MT |
GRFLMTMAHMD |
073H TELNYX LLC |
648 |
|
2020-08-07 |
|
| 406-845
| 2 |
Cut Bank |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2009-10-12 |
|
| 406-845
| 3 |
Cut Bank |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-01-15 |
|
| 406-845
| 4 |
Cut Bank |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2010-11-23 |
|
| 406-845
| 5 |
Cut Bank |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2012-02-06 |
|
| 406-845
| 6 |
Cut Bank |
MT |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-09-19 |
|
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Last updated: Sat, 10 Oct 2026 15:24:20 UTC
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