Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 860

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-860 A Chattanooga TN CHTGTN12X2Y  939H COMMIO, LLC 472      
423-860 0 Chattanooga TN   939H COMMIO, LLC 472   2022-09-03   
423-860 1 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 2 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 3 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 4 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 5 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 6 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 7 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 8 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   
423-860 9 Chattanooga TN   624H ONVOY SPECTRUM, LLC 472   2022-11-12   

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

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