Local Calling Guide
Area code/prefix search
Casper, WY
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| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 307-253
| 0 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2009-08-07 |
|
| 307-253
| 1 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 2 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 3 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 4 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 5 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 6 |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
2008-05-12 |
|
| 307-253
| 7 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2009-10-12 |
|
| 307-253
| 8 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2010-02-08 |
|
| 307-253
| 9 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2011-01-20 |
|
| 307-258
| A |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
|
|
| 307-259
| A |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
|
|
| 307-261
| A |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
|
|
| 307-262
| A |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
|
|
| 307-265
| A |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
|
|
| 307-266
| A |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
|
|
| 307-267
| A |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 0 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 1 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 2 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 3 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 4 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 5 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 6 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 7 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 8 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-267
| 9 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
|
|
| 307-268
| A |
CSPRWYMADS0 |
9636 QWEST CORPORATION |
654 |
|
|
|
| 307-277
| A |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
|
|
| 307-301
| A |
CSPRWYDNGMD |
515J IP HORIZON LLC |
654 |
|
|
|
| 307-301
| 0 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2023-12-28 |
|
| 307-301
| 1 |
|
515J IP HORIZON LLC |
654 |
|
2023-11-30 |
|
| 307-301
| 2 |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2024-02-26 |
|
| 307-301
| 3 |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2024-02-26 |
|
| 307-301
| 4 |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2024-02-26 |
|
| 307-301
| 5 |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2024-05-20 |
|
| 307-301
| 6 |
|
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2025-10-15 |
|
| 307-301
| 7 |
CSPRWYMAXEX |
6529 T-MOBILE USA, INC. |
654 |
|
2024-02-10 |
|
| 307-301
| 8 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
2023-12-25 |
|
| 307-301
| 9 |
CSPRWYMAXEX |
6529 T-MOBILE USA, INC. |
654 |
|
2023-12-04 |
|
| 307-315
| A |
|
792K CHARTER IP ENABLED SERVICES, LLC |
654 |
|
|
|
| 307-315
| 0 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2007-12-08 |
|
| 307-315
| 1 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2007-12-28 |
|
| 307-315
| 2 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2008-02-25 |
|
| 307-315
| 3 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2008-03-17 |
|
| 307-315
| 4 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2008-08-18 |
|
| 307-315
| 5 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2008-09-02 |
|
| 307-315
| 6 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
654 |
|
2007-07-13 |
|
| 307-315
| 7 |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2008-11-16 |
|
| 307-315
| 8 |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
2011-06-17 |
|
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Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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