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: 545

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-545 A Old Faithful WY OLFTWYMARS1  9636 QWEST CORPORATION 650      
307-545 0 Old Faithful WY   508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-19   
307-545 1 Old Faithful WY   450F ONVOY, LLC - WY 650   2012-12-13   
307-545 2 Old Faithful WY   9636 QWEST CORPORATION 650      
307-545 3 Old Faithful WY   081F BANDWIDTH.COM CLEC, LLC - WY 650   2011-11-25   
307-545 4 Old Faithful WY   9636 QWEST CORPORATION 650      
307-545 5 Old Faithful WY   450F ONVOY, LLC - WY 650   2012-12-13   
307-545 6 Old Faithful WY   450F ONVOY, LLC - WY 650   2007-04-21   
307-545 7 Old Faithful WY   9636 QWEST CORPORATION 650      
307-545 8 Old Faithful WY   450F ONVOY, LLC - WY 650   2012-12-13   
307-545 9 Old Faithful WY   9636 QWEST CORPORATION 650      

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

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