Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: OWBOKYMAXSX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
364-221 A Columbus KY 624H ONVOY SPECTRUM, LLC 464      
364-232 A Mammoth Cave KY 624H ONVOY SPECTRUM, LLC 464      
364-340 A Brownsville KY 624H ONVOY SPECTRUM, LLC 464      
364-360 A Dixon KY 624H ONVOY SPECTRUM, LLC 464      
364-464 A Owensboro KY 624H ONVOY SPECTRUM, LLC 464      
364-640 A Hickman KY 624H ONVOY SPECTRUM, LLC 464      
364-643 A Bowling Green KY 624H ONVOY SPECTRUM, LLC 464      
364-646 A Uniontown KY 624H ONVOY SPECTRUM, LLC 464      
364-664 A Madisonville KY 624H ONVOY SPECTRUM, LLC 464      
364-844 A Mayfield KY 624H ONVOY SPECTRUM, LLC 464      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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