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 04-Humboldt, IL

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-782 2   9329 ILLINOIS BELL TEL CO 358      
773-782 3   9329 ILLINOIS BELL TEL CO 358      
773-782 4   9329 ILLINOIS BELL TEL CO 358      
773-782 5   6529 T-MOBILE USA, INC. 358   2007-11-24   
773-782 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-09-10   
773-782 7   6529 T-MOBILE USA, INC. 358   2007-11-24   
773-782 8   9329 ILLINOIS BELL TEL CO 358      
773-782 9   460K FIRST COMMUNICATIONS, LLC 358   2015-10-29   
773-799 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-799 0   6529 T-MOBILE USA, INC. 358   2006-10-01   
773-799 1   6529 T-MOBILE USA, INC. 358   2006-10-01   
773-799 2   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-799 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-799 4   6529 T-MOBILE USA, INC. 358   2004-06-28   
773-799 5   6529 T-MOBILE USA, INC. 358   2004-08-16   
773-799 6   6529 T-MOBILE USA, INC. 358   2006-06-01   
773-799 7   6529 T-MOBILE USA, INC. 358   2006-06-01   
773-799 8   516C AT&T CORP. 358   2006-07-07   
773-799 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-837 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-839 A CHCGIL24DS6  224C ONVOY, LLC 358      
773-839 0   224C ONVOY, LLC 358   2016-01-21   
773-839 1   224C ONVOY, LLC 358   2016-01-21   
773-839 2   224C ONVOY, LLC 358   2016-01-21   
773-839 3   224C ONVOY, LLC 358   2016-01-21   
773-839 4   224C ONVOY, LLC 358   2016-01-21   
773-839 5   224C ONVOY, LLC 358   2016-01-21   
773-839 6   224C ONVOY, LLC 358   2016-01-21   
773-839 7   224C ONVOY, LLC 358   2016-01-21   
773-839 8   224C ONVOY, LLC 358   2016-01-21   
773-839 9   224C ONVOY, LLC 358   2016-01-21   
773-862 A CHCGILHBDS1  9329 ILLINOIS BELL TEL CO 358      
773-862 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-862 1   9329 ILLINOIS BELL TEL CO 358      
773-862 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-862 3   9329 ILLINOIS BELL TEL CO 358      
773-862 4   9329 ILLINOIS BELL TEL CO 358      
773-862 5   145J TERRA NOVA TELECOM INC. 358   2021-09-24   
773-862 6   9329 ILLINOIS BELL TEL CO 358      
773-862 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-09-19   
773-862 8   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-11-05   
773-862 9   9329 ILLINOIS BELL TEL CO 358      
773-872 A CHCGIL24DS6  224C ONVOY, LLC 358      
773-872 0   6529 T-MOBILE USA, INC. 358   2023-09-06   
773-872 1   6529 T-MOBILE USA, INC. 358   2023-09-06   
773-872 2   224C ONVOY, LLC 358   2023-08-12   
773-872 3   224C ONVOY, LLC 358   2023-08-12   
773-872 4   224C ONVOY, LLC 358   2023-08-12   
773-872 5   224C ONVOY, LLC 358   2023-08-12   
773-872 6   6529 T-MOBILE USA, INC. 358   2023-09-06   
773-872 7   6529 T-MOBILE USA, INC. 358   2023-09-06   
773-872 8   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-08-20   
773-872 9   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-08-20   
773-888 A CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
773-888 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-06-28   
773-888 1   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-11   
773-888 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-11   
773-888 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-11   
773-888 4   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-06-28   
773-888 5   829J PAETEC ITEL, LLC 358   2010-06-22   
773-888 6   224C ONVOY, LLC 358   2010-08-31   
773-888 7   224C ONVOY, LLC 358   2010-08-31   
773-888 8   460K FIRST COMMUNICATIONS, LLC 358   2013-12-19   
773-888 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-02-03   
773-904 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-904 0   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-07-18   
773-904 1   224C ONVOY, LLC 358   2009-03-19   
773-904 2   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-07-18   
773-904 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-05-19   
773-904 4   460K FIRST COMMUNICATIONS, LLC 358   2008-09-12   
773-904 5   460K FIRST COMMUNICATIONS, LLC 358   2008-08-17   
773-904 6   6529 T-MOBILE USA, INC. 358   2013-10-25   
773-904 7   318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-904 8   318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-904 9   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-01-22   
773-938 A   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-938 0   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-938 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-938 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-09-24   
773-938 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-15   
773-938 4   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-12-29   
773-938 5   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-938 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-938 7   984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-09-19   
773-938 8   829J PAETEC ITEL, LLC 358   2006-06-26   
773-938 9   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-969 A ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
773-969 0   6529 T-MOBILE USA, INC. 358   2008-02-21   
773-969 1   6529 T-MOBILE USA, INC. 358   2008-02-21   
773-969 2   6529 T-MOBILE USA, INC. 358   2008-02-21   
773-969 3   6529 T-MOBILE USA, INC. 358   2008-02-21   
773-969 4   829J PAETEC ITEL, LLC 358   2008-11-07   
773-969 5   5447 ACCESS ONE, INC. - IL 358   2008-11-07   
773-969 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
773-969 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-09-24   
773-969 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-09-24   
773-969 9   6529 T-MOBILE USA, INC. 358   2008-02-21   
872-206 A CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
872-206 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-05-29   
872-206 1   224C ONVOY, LLC 358   2012-07-03   

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

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.