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: 365

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-365 A Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-365 0 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2008-04-17   
307-365 1 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2011-07-15   
307-365 2 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2016-02-11   
307-365 3 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2015-12-16   
307-365 4 Cheyenne WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2014-09-08   
307-365 5 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2015-11-11   
307-365 6 Cheyenne WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2017-10-02   
307-365 7 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2015-09-09   
307-365 8 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2015-07-31   
307-365 9 Cheyenne WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2014-09-14   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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