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.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
618-281 A Columbia IL CLMAILXEDS0  520      
618-282 A Red Bud IL WTRLILXEDS0  520      
618-284 A Prairie du Rocher IL WTRLILXEDS0  520      
618-286 A Dupo IL CLMAILXEDS0  520      
618-458 A Renault IL WTRLILXEDS0  520      
618-935 A Valmeyer IL WTRLILXEDS0  520      
618-938 A Waterloo IL WTRLILXEDS0  520      
618-939 A Waterloo IL WTRLILXEDS0  520      

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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