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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Deerfield, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
417-966 A DRFDMOXARS1  1900 K L M TEL. CO. 522      
417-966 0   1900 K L M TEL. CO. 522      
417-966 1   1900 K L M TEL. CO. 522      
417-966 2   1900 K L M TEL. CO. 522      
417-966 4 SPFDMODL5MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2024-07-06   
417-966 7   1900 K L M TEL. CO. 522      
417-966 9   1900 K L M TEL. CO. 522      

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

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