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: WCHCILBFGT0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-900 0 McHenry IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-09-19   
847-802 0 Huntley IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-02-28   
847-961 0 Huntley IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2003-11-24   
847-961 8 Huntley IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2004-08-01   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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