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: 509

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-509 A Cheyenne WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-509 0 Cheyenne WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2008-11-09   
307-509 5 Cheyenne WY   450F ONVOY, LLC - WY 654   2019-09-07   
307-509 9 Cheyenne WY   6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2012-09-27   

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

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