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.
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Switch: DYTNOH22X5Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
326-203 A Dayton OH 624H ONVOY SPECTRUM, LLC 328      
326-207 A Dayton OH 624H ONVOY SPECTRUM, LLC 328      
326-221 A Belfast OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-223 A Centerville (Montgomery) OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-224 A Danville (Highland) OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-225 A Gratis OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-226 A Rainsboro OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-228 A South Vienna OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-229 A South Charleston OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-230 A Yellow Springs-Clifton OH 624H ONVOY SPECTRUM, LLC 328   2024-07-03   
937-809 A Dayton OH 624H ONVOY SPECTRUM, LLC 328      
937-930 A Dayton OH 624H ONVOY SPECTRUM, LLC 328      

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

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