Local Calling Guide
Area code/prefix search
Hardin, MT
1 2 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 406-623
| A |
BLNGMTVR0MD |
939H COMMIO, LLC |
650 |
|
|
|
| 406-623
| 0 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2007-03-18 |
|
| 406-623
| 1 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-06-05 |
|
| 406-623
| 2 |
|
935G TRI TEL, INC. - MT |
650 |
|
2013-01-28 |
|
| 406-623
| 3 |
|
073H TELNYX LLC |
650 |
|
2017-03-31 |
|
| 406-623
| 4 |
|
9415 LEVEL 3 COMMUNICATIONS, LLC - MT |
650 |
|
2005-04-09 |
|
| 406-623
| 5 |
|
453F ONVOY, LLC - MT |
650 |
|
2006-10-20 |
|
| 406-623
| 6 |
|
939H COMMIO, LLC |
650 |
|
2023-07-15 |
|
| 406-623
| 7 |
|
453F ONVOY, LLC - MT |
650 |
|
2011-07-17 |
|
| 406-623
| 8 |
|
453F ONVOY, LLC - MT |
650 |
|
2019-10-28 |
|
| 406-623
| 9 |
|
994E BANDWIDTH.COM CLEC, LLC - MT |
650 |
|
2008-11-26 |
|
| 406-629
| A |
BLNGMTAS9MD |
453F ONVOY, LLC - MT |
650 |
|
|
|
| 406-629
| 0 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-629
| 1 |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-629
| 2 |
|
453F ONVOY, LLC - MT |
650 |
|
2012-12-17 |
|
| 406-629
| 3 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
650 |
|
2010-10-01 |
|
| 406-629
| 4 |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-629
| 5 |
|
453F ONVOY, LLC - MT |
650 |
|
2019-09-15 |
|
| 406-629
| 6 |
|
453F ONVOY, LLC - MT |
650 |
|
2023-04-18 |
|
| 406-629
| 7 |
|
624H ONVOY SPECTRUM, LLC |
650 |
|
2024-03-22 |
|
| 406-629
| 8 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2023-11-22 |
|
| 406-638
| A |
CWAGMTXCDS0 |
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 0 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
2025-10-10 |
|
| 406-638
| 1 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-09-05 |
|
| 406-638
| 2 |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 3 |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 4 |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 5 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-638
| 6 |
|
771G TELEPORT COMMUNICATIONS AMERICA MT - LLC |
650 |
|
2020-08-07 |
|
| 406-638
| 7 |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-638
| 8 |
|
453F ONVOY, LLC - MT |
650 |
|
2021-07-05 |
|
| 406-638
| 9 |
|
2250 PROJECT TEL. CO., INC. |
650 |
|
|
|
| 406-665
| A |
HRDNMTMARS1 |
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 1 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 2 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 3 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 4 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 5 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-665
| 6 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 7 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
650 |
|
|
|
| 406-665
| 8 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-665
| 9 |
|
9636 QWEST CORPORATION |
650 |
|
|
|
| 406-679
| A |
BLNGMTVR5MD |
732J NUSO, LLC |
650 |
|
|
|
| 406-679
| 0 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 1 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 2 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 3 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 4 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
2014-09-05 |
|
| 406-679
| 5 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
| 406-679
| 6 |
|
6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT |
650 |
|
|
|
1 2 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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