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: 396

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-396 A Green River WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-396 0 Green River WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2021-12-23   
307-396 1 Green River WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2021-12-23   
307-396 2 Green River WY   450F ONVOY, LLC - WY 654   2025-01-05   
307-396 3 Green River WY   197D VONAGE AMERICA LLC 654   2024-05-30   
307-396 4 Green River WY   624H ONVOY SPECTRUM, LLC 654   2025-01-20   
307-396 5 Green River WY   450F ONVOY, LLC - WY 654   2025-03-01   
307-396 6 Green River WY   450F ONVOY, LLC - WY 654   2025-04-11   
307-396 8 Green River WY   450F ONVOY, LLC - WY 654   2023-09-16   
307-396 9 Green River WY   450F ONVOY, LLC - WY 654   2024-05-12   

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

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