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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Chicago Zone 01-Wabash, IL

<< 1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-689 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-692 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 0 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-02-07   
312-692 2 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 3 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 4 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 5 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 6 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 7 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 8 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-692 9 ELGNILOTGT5  5562 METROPCS, INC. 358   2011-01-05   
312-697 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 0 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-05-03   
312-697 2 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 3 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 4 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 5 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 6 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 7 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 8 CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-697 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-705 A CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-706 A CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-713 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-718 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-720 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-730 A CHCGILCLDS9  7421 AT&T - LOCAL 358      
312-730 0 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 1 CHCGILCLDS9  7421 AT&T - LOCAL 358      
312-730 2 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 4 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 6 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 7 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-03-19   
312-730 9 CHCGILCLDS9  7421 AT&T - LOCAL 358      
312-732 A CHCGILWBDS0  9329 ILLINOIS BELL TEL CO 358      
312-740 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-745 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-747 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-753 A CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 0 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 1 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 2 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 3 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 4 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 5 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-753 6 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2005-01-02   
312-753 7 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2005-01-02   
312-753 8 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-06-19   
312-753 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2005-06-19   
312-758 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-760 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-765 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 0 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 1 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 2 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 3 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-765 4 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-01-01   
312-765 5 CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-01-01   
312-765 6 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 7 CHCGIL24DS6  224C ONVOY, LLC 358   2011-02-18   
312-765 8 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-765 9 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2011-02-24   
312-771 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-777 A CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 0 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 1 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 2 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 3 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 4 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 5 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 6 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 7 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 8 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-777 9 CHCGIL24DS6  224C ONVOY, LLC 358   2010-10-27   
312-780 A EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 0 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 1 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 2 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 3 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 4 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 5 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 6 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 7 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 8 EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
312-780 9 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-786 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-788 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
312-788 1 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2011-06-20   
312-788 2 CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2014-04-16   
312-788 3 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
312-788 5 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 6 CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358   2016-03-28   
312-788 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   

<< 1 2 3 4 5 6 7 8 9 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.