Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-676 7 Wheeling IL 460K FIRST COMMUNICATIONS, LLC 358   2009-08-16   
224-717 5 Zion IL 460K FIRST COMMUNICATIONS, LLC 358   2006-05-22   
224-717 8 Zion IL 460K FIRST COMMUNICATIONS, LLC 358   2004-12-02   
224-730 5 Zion IL 460K FIRST COMMUNICATIONS, LLC 358   2006-07-30   
224-757 6 Round Lake IL 460K FIRST COMMUNICATIONS, LLC 358   2005-06-20   
224-764 4 Arlington Heights IL 460K FIRST COMMUNICATIONS, LLC 358   2008-02-14   
224-765 5 Highland Park IL 460K FIRST COMMUNICATIONS, LLC 358   2004-07-16   
224-778 1 Libertyville IL 460K FIRST COMMUNICATIONS, LLC 358   2006-11-06   
224-927 A Northbrook IL 460K FIRST COMMUNICATIONS, LLC 358      
224-927 1 Northbrook IL 460K FIRST COMMUNICATIONS, LLC 358   2006-11-17   
224-927 2 Northbrook IL 460K FIRST COMMUNICATIONS, LLC 358   2006-11-17   
224-927 5 Northbrook IL 460K FIRST COMMUNICATIONS, LLC 358   2006-11-17   
224-927 7 Northbrook IL 460K FIRST COMMUNICATIONS, LLC 358   2006-11-17   
224-998 1 Skokie IL 460K FIRST COMMUNICATIONS, LLC 358   2016-02-09   
312-216 A Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358      
312-216 1 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2012-04-13   
312-235 4 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2005-11-27   
312-235 5 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2005-11-27   
312-237 4 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2010-06-06   
312-239 2 Chicago Zone 01-Canal IL 460K FIRST COMMUNICATIONS, LLC 358   2004-03-09   
312-242 2 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2002-07-03   
312-242 4 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2001-07-09   
312-242 6 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2001-07-09   
312-242 8 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2001-07-09   
312-242 9 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2001-07-09   
312-247 A Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358      
312-247 0 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 1 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 2 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 3 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 4 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 5 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 6 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 7 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 8 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-247 9 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2004-05-28   
312-256 8 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2009-01-31   
312-261 3 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358      
312-267 4 Chicago Zone 01-Franklin IL 460K FIRST COMMUNICATIONS, LLC 358   2004-09-24   
312-291 2 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2010-03-01   
312-291 7 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2006-05-25   
312-319 7 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2017-06-20   
312-334 A Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358      
312-363 6 Chicago Zone 01-Monroe IL 460K FIRST COMMUNICATIONS, LLC 358   2004-06-06   
312-374 2 Chicago Zone 01-Lakeshore IL 460K FIRST COMMUNICATIONS, LLC 358   2013-01-04   
312-379 3 Chicago Zone 01-Calumet IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
312-386 6 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2011-07-08   
312-386 8 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2005-08-19   
312-444 8 Chicago Zone 01-Franklin IL 460K FIRST COMMUNICATIONS, LLC 358   2009-01-15   
312-447 2 Chicago Zone 01-Wabash IL 460K FIRST COMMUNICATIONS, LLC 358   2006-07-11   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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