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: WTRLILXE0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-281 A Columbia IL 1026 HARRISONVILLE TEL. CO. 520      
618-282 A Red Bud IL 1026 HARRISONVILLE TEL. CO. 520      
618-284 A Prairie du Rocher IL 1026 HARRISONVILLE TEL. CO. 520      
618-286 A Dupo IL 1026 HARRISONVILLE TEL. CO. 520      
618-458 A Renault IL 1026 HARRISONVILLE TEL. CO. 520      
618-935 A Valmeyer IL 1026 HARRISONVILLE TEL. CO. 520      
618-938 A Waterloo IL 1026 HARRISONVILLE TEL. CO. 520      
618-939 A Waterloo IL 1026 HARRISONVILLE TEL. CO. 520      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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