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: LNVLKSXAAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
620-787 A Dunlap KS 1839 TRI-COUNTY TEL. ASSN., INC. 532      
620-924 A Lincolnville KS 1839 TRI-COUNTY TEL. ASSN., INC. 532      

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

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