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: CLMBMOHR1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-861 A Jefferson City MO 732J NUSO, LLC 521      
573-861 2 Jefferson City MO 732J NUSO, LLC 521   2023-04-03   
573-861 7 Jefferson City MO 732J NUSO, LLC 521   2023-12-22   
573-861 8 Jefferson City MO 732J NUSO, LLC 521   2023-12-22   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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