Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-374 A Rock Springs WY CHYNWYRF5MD  197D VONAGE AMERICA LLC 654      
307-374 0 Rock Springs WY CHYNWYRF2MD  939H COMMIO, LLC 654   2022-07-29   
307-374 1 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2023-06-22   
307-374 2 Rock Springs WY CHYNWYRF5MD  197D VONAGE AMERICA LLC 654   2021-11-01   
307-374 3 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2023-12-28   
307-374 4 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2022-01-02   
307-374 5 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2022-01-02   
307-374 6 Rock Springs WY   450F ONVOY, LLC - WY 654   2024-03-03   
307-374 7 Rock Springs WY   450F ONVOY, LLC - WY 654   2024-03-03   
307-374 8 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2023-07-23   
307-374 9 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2023-10-12   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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