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: 316

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-316 A Cheyenne WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-316 0 Cheyenne WY   450F ONVOY, LLC - WY 654   2006-05-19   
307-316 1 Cheyenne WY   450F ONVOY, LLC - WY 654   2012-12-13   
307-316 2 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2014-11-27   
307-316 3 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2015-05-15   
307-316 4 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2015-05-15   
307-316 5 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2015-05-15   
307-316 6 Cheyenne WY   450F ONVOY, LLC - WY 654   2015-12-04   
307-316 7 Cheyenne WY   450F ONVOY, LLC - WY 654   2008-04-11   
307-316 8 Cheyenne WY   450F ONVOY, LLC - WY 654   2010-11-14   
307-316 9 Cheyenne WY   581H AIRUS, INC. - WY 654   2019-02-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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