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: OKCYOKFB05Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
405-548 A Oklahoma City OK 732J NUSO, LLC 536      
405-548 6 Oklahoma City OK 732J NUSO, LLC 536   2023-08-28   
572-233 3 Oklahoma City OK 732J NUSO, LLC 536   2024-05-13   
572-233 4 Oklahoma City OK 732J NUSO, LLC 536   2024-05-13   
572-240 8 Oklahoma City OK 732J NUSO, LLC 536   2024-09-14   
572-240 9 Oklahoma City OK 732J NUSO, LLC 536   2024-09-14   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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