Local Calling Guide

Area code/prefix search

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Chicago Zone 01-Calumet, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-985 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
312-985 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-985 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-11-08   
312-985 8 CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2000-05-05   
312-985 9 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-03-26   
312-989 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-989 0 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2016-04-13   
312-989 1 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2016-04-06   
312-989 2 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2016-05-09   
312-989 3 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2015-07-30   
312-989 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-989 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-989 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-989 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-989 8 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-989 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-07-25   
312-994 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
312-994 0 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
312-994 1 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-08-25   
312-994 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-09-16   
312-994 3 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2010-04-22   
312-994 4 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-08-28   
312-994 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358      
312-994 6 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2001-06-15   
312-994 7 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2000-08-04   
312-994 8 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2007-05-18   
312-994 9 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2000-06-29   
312-995 A CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-995 0 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-10-14   
312-995 1 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2014-10-14   
312-995 2 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-10-14   
312-995 3 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-10-14   
312-995 4 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-10-14   
312-995 5 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 6 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 7 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 8 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2014-10-13   
312-995 9 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2014-10-14   
312-998 A CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
312-998 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 4 CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358   2014-10-03   
312-998 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-998 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2014-10-10   
312-999 A DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-999 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-08-14   
312-999 1 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-12-02   
312-999 3 CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-10-14   
312-999 4 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 5 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 6 DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2010-12-02   
312-999 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-08-14   
312-999 8 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-08-14   
312-999 9 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2014-01-02   
773-215 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
773-216 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-216 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-222 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
773-258 A LBRDILGOAMD  6630 USA MOBILITY WIRELESS, INC. 358      
773-317 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-317 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-354 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-370 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-370 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-370 1 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-370 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      

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Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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