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: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-475 A Cheyenne WY CHYNWYRF1MD  073H TELNYX LLC 654      
307-475 1 Cheyenne WY CHYNWYRF1MD  073H TELNYX LLC 654   2017-02-11   
307-475 3 Cheyenne WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2019-06-20   
307-475 6 Cheyenne WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-475 7 Cheyenne WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   
307-475 8 Cheyenne WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2020-12-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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