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: 479

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-479 A Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2025-04-05   
307-479 0 Powell WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2025-04-05   
307-479 1 Powell WY CHYNWYRFDS0  581H AIRUS, INC. - WY 654   2025-05-12   
307-479 2 Powell WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2025-05-29   
307-479 3 Powell WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2025-05-29   
307-479 8 Powell WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2026-09-03   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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