Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Chicago Zone 01-Lakeshore, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-616 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-650 A CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 0 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 1 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 2 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 3 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 4 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 5 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 6 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-650 7 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2004-11-27   
312-650 8 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2004-11-27   
312-650 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-653 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-729 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-819 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-856 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-856 0 CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-856 1 CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-856 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 4 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 5 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 7 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2015-01-03   
312-856 8 CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-856 9 CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-861 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-863 A CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-863 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-07   
312-863 1 CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2005-06-19   
312-863 2 CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2000-03-13   
312-863 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2000-03-07   
312-863 4 CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-863 5 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2000-03-07   
312-863 6 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2000-03-07   
312-863 7 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2000-03-07   
312-863 8 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2000-03-07   
312-863 9 CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2005-06-19   
312-938 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      
312-946 A CHCGILLRDS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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