Local Calling Guide
Area code/prefix search
NPA: 307
[Rate centres in NPA 307]
[Dial plan for NPA 307]
NXX: 394
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 307-394
| A |
Casper |
WY |
CSPRWYMAXEX |
6529 T-MOBILE USA, INC. |
654 |
|
|
|
| 307-394
| 0 |
Casper |
WY |
CHYNWY07GMD |
5562 METROPCS, INC. |
654 |
|
2021-11-11 |
|
| 307-394
| 1 |
Casper |
WY |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
2021-11-14 |
|
| 307-394
| 2 |
Casper |
WY |
CSPRWYMAXMD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
654 |
|
2021-11-14 |
|
| 307-394
| 3 |
Casper |
WY |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2021-08-27 |
|
| 307-394
| 4 |
Casper |
WY |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2021-08-27 |
|
| 307-394
| 5 |
Casper |
WY |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2021-08-27 |
|
| 307-394
| 6 |
Casper |
WY |
CHYNWYMAX2X |
450F ONVOY, LLC - WY |
654 |
|
2021-08-27 |
|
| 307-394
| 7 |
Casper |
WY |
CHYNWYMAXIX |
6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY |
654 |
|
2023-09-23 |
|
| 307-394
| 8 |
Casper |
WY |
CHYNWYMAXGX |
624H ONVOY SPECTRUM, LLC |
654 |
|
2021-11-20 |
|
| 307-394
| 9 |
Casper |
WY |
CSPRWYMAXEX |
6529 T-MOBILE USA, INC. |
654 |
|
2021-07-23 |
|
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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