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.
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Switch: CHCGILNEXJX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-201 5 La Salle IL 318J COMCAST IP PHONE, LLC 358   2014-05-30   
779-205 3 Joliet IL 318J COMCAST IP PHONE, LLC 358   2013-06-26   
779-206 2 Joliet IL 318J COMCAST IP PHONE, LLC 358   2013-07-22   
779-206 4 Joliet IL 318J COMCAST IP PHONE, LLC 358   2013-09-08   
779-220 4 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2012-09-16   
779-220 9 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2013-01-13   
779-223 6 Onarga IL 318J COMCAST IP PHONE, LLC 358   2020-03-13   
779-229 A Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 0 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 1 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 2 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 3 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 4 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 5 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 7 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 8 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-229 9 Depue IL 318J COMCAST IP PHONE, LLC 358      
779-234 6 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2014-03-16   
779-234 9 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2015-07-23   
779-242 1 Joliet IL 318J COMCAST IP PHONE, LLC 358   2017-11-23   
779-244 1 McHenry IL 318J COMCAST IP PHONE, LLC 358   2019-06-07   
779-244 3 McHenry IL 318J COMCAST IP PHONE, LLC 358   2017-12-19   
779-244 5 McHenry IL 318J COMCAST IP PHONE, LLC 358   2019-04-19   
779-247 2 Woodstock IL 318J COMCAST IP PHONE, LLC 358   2019-12-29   
779-252 2 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2016-08-01   
779-254 A Frankfort IL 318J COMCAST IP PHONE, LLC 358      
779-254 2 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2015-10-23   
779-324 5 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2012-01-12   
779-333 7 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2014-07-27   
779-356 2 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2022-05-10   
779-356 4 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2022-05-10   
779-426 7 Manhattan IL 318J COMCAST IP PHONE, LLC 358   2023-02-11   
779-429 4 Wilmington IL 318J COMCAST IP PHONE, LLC 358   2015-08-06   
779-444 2 Wonder Lake IL 318J COMCAST IP PHONE, LLC 358   2012-10-26   
779-529 6 Manteno IL 318J COMCAST IP PHONE, LLC 358   2015-03-08   
779-701 5 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2015-06-12   
779-704 2 McHenry IL 318J COMCAST IP PHONE, LLC 358   2014-08-22   
779-704 5 McHenry IL 318J COMCAST IP PHONE, LLC 358   2016-03-31   
779-803 3 New Lenox IL 318J COMCAST IP PHONE, LLC 358   2014-04-17   
779-803 5 New Lenox IL 318J COMCAST IP PHONE, LLC 358   2017-04-18   
779-900 8 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2020-03-04   
779-994 4 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2014-02-22   
779-994 7 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2015-07-25   
815-201 9 Sheridan IL 318J COMCAST IP PHONE, LLC 358   2020-04-11   
815-230 5 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-250 A La Salle IL 318J COMCAST IP PHONE, LLC 358      
815-250 0 La Salle IL 318J COMCAST IP PHONE, LLC 358   2006-10-16   
815-255 2 Minooka IL 318J COMCAST IP PHONE, LLC 358   2010-09-14   
815-255 7 Minooka IL 318J COMCAST IP PHONE, LLC 358   2013-05-23   
815-267 6 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2012-05-05   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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