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: 800

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-800 A Kemmerer WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-800 0 Kemmerer WY   450F ONVOY, LLC - WY 654   2013-01-18   
307-800 1 Kemmerer WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2014-06-20   
307-800 2 Kemmerer WY   6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-09-21   
307-800 3 Kemmerer WY   450F ONVOY, LLC - WY 654   2019-09-07   
307-800 4 Kemmerer WY   6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-09-21   
307-800 5 Kemmerer WY   879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2020-09-07   
307-800 6 Kemmerer WY   508J CENTURYLINK COMMUNICATIONS, LLC 654   2015-03-18   
307-800 7 Kemmerer WY   450F ONVOY, LLC - WY 654   2013-01-18   
307-800 8 Kemmerer WY   3880 ALL WEST/WYOMING, INC. 654   2016-03-31   
307-800 9 Kemmerer WY   073H TELNYX LLC 654   2019-03-01   

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

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