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.

Switch: ZIONILZNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
847-379 2 Zion IL 9329 ILLINOIS BELL TEL CO 358   2000-09-18   
847-379 3 Zion IL 9329 ILLINOIS BELL TEL CO 358   2000-09-18   
847-379 4 Zion IL 9329 ILLINOIS BELL TEL CO 358   2000-09-18   
847-731 A Zion IL 9329 ILLINOIS BELL TEL CO 358      
847-746 A Zion IL 9329 ILLINOIS BELL TEL CO 358      
847-872 A Zion IL 9329 ILLINOIS BELL TEL CO 358      

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

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