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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OCN: 8953 MARK TWAIN COMMUNICATIONS

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
573-209 A Ewing MO EWNGMO01RL1  520      
573-215 A Lewistown MO LWTWMO01RL2  520      
660-213 A La Belle MO LBLLMO01RL0  524      

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

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