Local Calling Guide
Area code/prefix search
Columbia Falls, MT
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-892
| A |
CLFLMTXCRS0 |
2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK |
648 |
|
|
|
| 406-897
| A |
KLSLMTAZ1MD |
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
|
|
| 406-897
| 0 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2021-11-18 |
|
| 406-897
| 1 |
|
986F WESTERN MONTANA COMMUNITYTEL INC. - MT |
648 |
|
2023-01-20 |
|
| 406-897
| 2 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2006-04-21 |
|
| 406-897
| 3 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2014-02-07 |
|
| 406-897
| 4 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2011-09-30 |
|
| 406-897
| 5 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
648 |
|
2015-11-12 |
|
| 406-897
| 6 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
648 |
|
2014-05-24 |
|
| 406-897
| 7 |
|
453F ONVOY, LLC - MT |
648 |
|
2007-03-09 |
|
| 406-897
| 8 |
|
453F ONVOY, LLC - MT |
648 |
|
2011-07-17 |
|
| 406-897
| 9 |
|
453F ONVOY, LLC - MT |
648 |
|
2015-12-10 |
|
| 406-909
| A |
HLNAMTMAX1X |
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
|
|
| 406-909
| 0 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
648 |
|
2018-07-08 |
|
| 406-909
| 1 |
|
073H TELNYX LLC |
648 |
|
2020-08-07 |
|
| 406-909
| 2 |
|
453F ONVOY, LLC - MT |
648 |
|
2021-07-05 |
|
| 406-909
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
648 |
|
2019-01-28 |
|
| 406-909
| 4 |
|
453F ONVOY, LLC - MT |
648 |
|
2019-09-15 |
|
| 406-909
| 5 |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
648 |
|
2023-04-24 |
|
| 406-909
| 6 |
|
453F ONVOY, LLC - MT |
648 |
|
2020-01-03 |
|
| 406-909
| 7 |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-07-18 |
|
| 406-909
| 8 |
|
453F ONVOY, LLC - MT |
648 |
|
2019-10-28 |
|
| 406-909
| 9 |
|
624H ONVOY SPECTRUM, LLC |
648 |
|
2021-10-30 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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