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: 239

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-239 A Dubois WY   6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-239 8 Dubois WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2021-03-15   
307-239 9 Dubois WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2021-03-15   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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