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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-257 A Gillette WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-257 0 Gillette WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2006-11-20   
307-257 1 Gillette WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2006-11-20   
307-257 2 Gillette WY CSPRWYESPS1  009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654   2006-08-29   
307-257 3 Gillette WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2007-03-16   
307-257 4 Gillette WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2008-06-08   
307-257 5 Gillette WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654   2010-03-21   
307-257 6 Gillette WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2005-02-26   
307-257 7 Gillette WY CSPRWYESPS1  009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654   2005-07-30   
307-257 8 Gillette WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2006-11-05   
307-257 9 Gillette WY CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2007-12-31   

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

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