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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South Caldwell, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-849 A SCWLOKXADS0  1788 KANOKLA TEL ASSN 536      
580-849 0   1788 KANOKLA TEL ASSN 536      
580-849 1   145J TERRA NOVA TELECOM INC. 536   2025-07-12   
580-849 2   1788 KANOKLA TEL ASSN 536      
580-849 3   1788 KANOKLA TEL ASSN 536      
580-849 4   1788 KANOKLA TEL ASSN 536      
580-849 5   1788 KANOKLA TEL ASSN 536      
580-849 6   1788 KANOKLA TEL ASSN 536      
580-849 7   1788 KANOKLA TEL ASSN 536      
580-849 8   1788 KANOKLA TEL ASSN 536      
580-849 9   1788 KANOKLA TEL ASSN 536      

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

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