Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 04-Humboldt, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-735 A   6664 SPRINT SPECTRUM L.P. 358      
773-227 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-235 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-252 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-269 A CHCGILCLGMD  7421 AT&T LOCAL 358      
773-269 0   6664 SPRINT SPECTRUM L.P. 358   2003-10-01   
773-269 1   6664 SPRINT SPECTRUM L.P. 358   2003-10-01   
773-269 2   9329 AMERITECH ILLINOIS 358   2002-03-25   
773-269 3   224C ONVOY, LLC 358   2014-09-03   
773-269 4   6664 SPRINT SPECTRUM L.P. 358   2007-05-20   
773-269 5   7421 AT&T LOCAL 358      
773-269 6   4604 FIRST COMMUNICATIONS LLC - IL 358   2005-07-04   
773-269 7   6664 SPRINT SPECTRUM L.P. 358   2003-10-01   
773-269 8   6664 SPRINT SPECTRUM L.P. 358   2003-10-01   
773-269 9   6664 SPRINT SPECTRUM L.P. 358   2003-05-06   
773-270 A   6664 SPRINT SPECTRUM L.P. 358      
773-270 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-270 1   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-270 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-270 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-270 4   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2013-08-09   
773-270 5   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2013-08-09   
773-270 6   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2018-01-01   
773-270 7   6664 SPRINT SPECTRUM L.P. 358   2009-07-25   
773-270 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-11-27   
773-270 9   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-06-14   
773-276 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-278 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-289 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-289 0   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2006-07-31   
773-289 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-289 2   6529 T-MOBILE USA, INC. 358   2004-09-05   
773-289 3   9329 AMERITECH ILLINOIS 358   2001-06-02   
773-289 4   9329 AMERITECH ILLINOIS 358   2001-06-02   
773-289 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-289 6   6529 T-MOBILE USA, INC. 358   2006-08-25   
773-289 7   6529 T-MOBILE USA, INC. 358   2004-08-23   
773-289 8   6529 T-MOBILE USA, INC. 358   2004-09-05   
773-289 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-292 A CHCGILHBDS1  9329 AMERITECH ILLINOIS 358      
773-328 A CHCGIL24DS3  4604 FIRST COMMUNICATIONS LLC - IL 358      
773-328 0   6529 T-MOBILE USA, INC. 358   2011-03-16   
773-328 1   5447 ACCESS ONE, INC. - IL 358   2010-09-19   
773-328 2   4604 FIRST COMMUNICATIONS LLC - IL 358      
773-328 3   4604 FIRST COMMUNICATIONS LLC - IL 358      
773-328 4   4604 FIRST COMMUNICATIONS LLC - IL 358      
773-328 5   4604 FIRST COMMUNICATIONS LLC - IL 358   2004-09-12   
773-328 6   4604 FIRST COMMUNICATIONS LLC - IL 358      
773-328 7   9329 AMERITECH ILLINOIS 358   2001-09-10   
773-328 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-27   

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Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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