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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.