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: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-243 A Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-243 0 Casper WY CHYNWYRFDS0  581H AIRUS, INC. - WY 654   2020-09-26   
307-243 1 Casper WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2020-05-29   
307-243 2 Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-243 3 Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-243 4 Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-09-07   
307-243 5 Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-07-11   
307-243 6 Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-07-11   
307-243 7 Casper WY CHYNWY07LMD  5562 METROPCS, INC. 654   2021-05-16   
307-243 8 Casper WY CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2022-03-15   
307-243 9 Casper WY CSPRWYMAXEX  6529 T-MOBILE USA, INC. 654   2023-08-25   

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

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