Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILWUX6X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
331-456 1 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 2 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 3 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 4 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 5 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 6 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 7 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 8 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-456 9 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2008-01-26   
331-457 6 Naperville IL 460K FIRST COMMUNICATIONS, LLC 358   2010-04-03   
331-551 5 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2010-01-29   
331-642 6 Elmhurst IL 460K FIRST COMMUNICATIONS, LLC 358   2010-04-09   
331-701 4 Naperville IL 460K FIRST COMMUNICATIONS, LLC 358   2015-02-13   
331-806 1 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2015-07-27   
331-903 1 Downers Grove IL 460K FIRST COMMUNICATIONS, LLC 358   2016-06-25   
630-210 3 Naperville IL 460K FIRST COMMUNICATIONS, LLC 358   2011-02-11   
630-225 4 Warrenville IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-228 8 Bensenville IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-230 2 Hinsdale IL 460K FIRST COMMUNICATIONS, LLC 358   2005-07-25   
630-233 3 Bartlett IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-07   
630-233 5 Bartlett IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-239 4 Geneva IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-239 6 Geneva IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-07   
630-242 7 Hinsdale IL 460K FIRST COMMUNICATIONS, LLC 358      
630-246 5 Bartlett IL 460K FIRST COMMUNICATIONS, LLC 358   2007-06-07   
630-256 7 Aurora IL 460K FIRST COMMUNICATIONS, LLC 358   2010-01-28   
630-259 5 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2004-09-10   
630-259 8 Roselle IL 460K FIRST COMMUNICATIONS, LLC 358   2000-11-02   
630-261 6 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2005-11-09   
630-273 A Plano IL 460K FIRST COMMUNICATIONS, LLC 358      
630-273 4 Plano IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-273 9 Plano IL 460K FIRST COMMUNICATIONS, LLC 358      
630-276 7 Naperville IL 460K FIRST COMMUNICATIONS, LLC 358   2000-11-02   
630-280 2 Hinsdale IL 460K FIRST COMMUNICATIONS, LLC 358   2013-12-08   
630-282 3 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2014-10-10   
630-282 5 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2003-03-20   
630-303 5 Naperville IL 460K FIRST COMMUNICATIONS, LLC 358   2005-09-29   
630-310 5 Downers Grove IL 460K FIRST COMMUNICATIONS, LLC 358   2004-03-10   
630-313 1 Geneva IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-24   
630-315 1 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2011-11-11   
630-315 3 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2000-11-02   
630-315 5 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-07   
630-315 6 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2011-11-03   
630-315 8 Wheaton IL 460K FIRST COMMUNICATIONS, LLC 358   2007-09-07   
630-317 5 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358      
630-317 6 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2007-07-27   
630-317 8 Lombard IL 460K FIRST COMMUNICATIONS, LLC 358   2007-07-27   
630-318 9 Big Rock IL 460K FIRST COMMUNICATIONS, LLC 358   2000-08-07   
630-320 5 Hinsdale IL 460K FIRST COMMUNICATIONS, LLC 358   2006-07-02   
630-324 1 Downers Grove IL 460K FIRST COMMUNICATIONS, LLC 358   2000-08-07   

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

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