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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Corn, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-343 A CORNOKXADS0  1965 WINDSTREAM OKLAHOMA, INC. 536      
580-960 A CORNOKXAPS0  1965 WINDSTREAM OKLAHOMA, INC. 536      
580-960 0 OKCYOKCEXJZ  624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-960 9 CORNOKXAPS0  1965 WINDSTREAM OKLAHOMA, INC. 536   2016-08-22   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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