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: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-500 A Border WY BOISIDMAXIX  450F ONVOY, LLC - WY 652      
307-500 1 Border WY   450F ONVOY, LLC - WY 652   2021-07-11   
307-500 2 Border WY   081F BANDWIDTH.COM CLEC, LLC - WY 652   2021-06-14   
307-500 3 Border WY   624H ONVOY SPECTRUM, LLC 652   2021-07-25   
307-500 4 Border WY   624H ONVOY SPECTRUM, LLC 652   2021-11-14   
307-500 5 Border WY   450F ONVOY, LLC - WY 652   2021-04-06   
307-500 6 Border WY   450F ONVOY, LLC - WY 652   2021-04-06   
307-500 7 Border WY   624H ONVOY SPECTRUM, LLC 652   2021-11-14   
307-500 8 Border WY   6010 NEW CINGULAR WIRELESS PCS, LLC 652   2021-06-14   
307-500 9 Border WY   6010 NEW CINGULAR WIRELESS PCS, LLC 652   2021-06-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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