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.

Barrington, IL

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
847-620 9   6529 T-MOBILE USA, INC. 358   2005-02-28   
847-713 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-713 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-20   
847-713 1   224C ONVOY, LLC 358   2011-08-02   
847-713 2   9329 ILLINOIS BELL TEL CO 358   1999-09-28   
847-713 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-713 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2002-11-15   
847-713 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-713 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-713 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-713 8   460K FIRST COMMUNICATIONS, LLC 358   2004-09-20   
847-713 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
847-756 A EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
847-756 0   6529 T-MOBILE USA, INC. 358   2004-10-15   
847-756 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-10-27   
847-756 2   9329 ILLINOIS BELL TEL CO 358   2001-11-26   
847-756 3   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-07-22   
847-756 4   9329 ILLINOIS BELL TEL CO 358   2002-10-12   
847-756 5   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2001-12-18   
847-756 6   9329 ILLINOIS BELL TEL CO 358   2002-10-12   
847-756 7   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2001-06-25   
847-756 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-11-11   
847-756 9   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
847-809 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
847-842 A BNTOILBADS0  9329 ILLINOIS BELL TEL CO 358      
847-852 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
847-852 0   6529 T-MOBILE USA, INC. 358   2005-02-28   
847-852 1   224C ONVOY, LLC 358   2004-09-20   
847-852 2   460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
847-852 3   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-08-26   
847-852 4   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
847-852 5   7421 AT&T - LOCAL 358   2003-02-16   
847-852 6   6529 T-MOBILE USA, INC. 358   2004-09-04   
847-852 7   224C ONVOY, LLC 358   2012-05-03   
847-852 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-09-23   
847-852 9   6529 T-MOBILE USA, INC. 358   2004-12-09   

<< 1 2 3

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.