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 09-South Chicago, IL

1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-217 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-217 0   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-02-25   
773-217 1   829J PAETEC ITEL, LLC 358   2009-11-02   
773-217 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-01-07   
773-217 3   5562 METROPCS, INC. 358   2014-11-14   
773-217 4   5562 METROPCS, INC. 358   2014-11-14   
773-217 5   5562 METROPCS, INC. 358   2014-11-14   
773-217 6   5562 METROPCS, INC. 358   2014-11-14   
773-217 7   515J IP HORIZON LLC 358   2013-08-26   
773-217 8   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-12   
773-217 9   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-12   
773-221 A CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358      
773-335 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-02   
773-335 0   6529 T-MOBILE USA, INC. 358   2025-02-06   
773-335 1   6529 T-MOBILE USA, INC. 358   2025-02-06   
773-335 2   6529 T-MOBILE USA, INC. 358   2025-02-06   
773-335 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-09   
773-335 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-09   
773-335 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-09   
773-335 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-09   
773-335 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-02   
773-335 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-02   
773-335 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-02-02   
773-336 A CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      
773-336 0   460K FIRST COMMUNICATIONS, LLC 358      
773-336 1   460K FIRST COMMUNICATIONS, LLC 358      
773-336 2   984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
773-336 3   460K FIRST COMMUNICATIONS, LLC 358   2004-11-12   
773-336 4   8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2004-10-01   
773-336 5   8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2005-09-13   
773-336 6   460K FIRST COMMUNICATIONS, LLC 358   2004-09-09   
773-336 7   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   1999-12-03   
773-336 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-04-25   
773-336 9   460K FIRST COMMUNICATIONS, LLC 358      
773-356 A CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358      
773-359 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-359 0   460K FIRST COMMUNICATIONS, LLC 358   2000-08-07   
773-359 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-10-16   
773-359 2   318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-359 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
773-359 4   318J COMCAST IP PHONE, LLC 358   2008-12-12   
773-359 5   9329 ILLINOIS BELL TEL CO 358   2000-07-07   
773-359 6   8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2007-08-02   
773-359 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-359 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-359 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-364 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
773-364 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-364 1   224C ONVOY, LLC 358   2004-09-15   
773-364 2   829J PAETEC ITEL, LLC 358   2007-11-23   
773-364 3   829J PAETEC ITEL, LLC 358   2006-10-08   
773-364 4   829J PAETEC ITEL, LLC 358   2006-10-08   
773-364 5   829J PAETEC ITEL, LLC 358      
773-364 6   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-364 7   829J PAETEC ITEL, LLC 358   2004-12-16   
773-364 8   829J PAETEC ITEL, LLC 358   2004-12-16   
773-364 9   829J PAETEC ITEL, LLC 358   2004-12-16   
773-374 A CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358      
773-375 A CHCGILSCDS0  9329 ILLINOIS BELL TEL CO 358      
773-382 A CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2024-12-09   
773-382 0   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-10-25   
773-382 1   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-08-22   
773-382 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2004-04-06   
773-382 3   5447 ACCESS ONE, INC. - IL 358   2006-01-20   
773-382 4   460K FIRST COMMUNICATIONS, LLC 358   2003-03-26   
773-382 5   829J PAETEC ITEL, LLC 358      
773-382 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-382 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-382 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-01-13   
773-382 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-389 A CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2024-02-12   
773-389 1   224C ONVOY, LLC 358   2019-07-07   
773-389 2   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2019-12-28   
773-389 3   984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-11-06   
773-389 4   984E BANDWIDTH.COM CLEC, LLC - IL 358   2021-08-23   
773-389 5   984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-11-06   
773-389 6   984E BANDWIDTH.COM CLEC, LLC - IL 358   2021-08-23   
773-389 7   073H TELNYX LLC 358   2020-11-08   
773-389 8   624H ONVOY SPECTRUM, LLC 358   2022-06-19   
773-389 9   495J STRATUS NETWORKS 358   2020-09-20   
773-437 A CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 1   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 2   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 3   318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 4   318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 5   516C AT&T CORP. 358   2006-05-02   
773-437 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-437 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2007-05-13   
773-437 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-514 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
773-514 0   6529 T-MOBILE USA, INC. 358   2024-01-13   
773-514 1   6529 T-MOBILE USA, INC. 358   2024-01-13   
773-514 2   224C ONVOY, LLC 358   2024-02-24   
773-514 3   224C ONVOY, LLC 358   2024-02-24   
773-514 4   224C ONVOY, LLC 358   2024-02-24   
773-514 5   224C ONVOY, LLC 358   2024-02-24   
773-514 6   6529 T-MOBILE USA, INC. 358   2024-02-19   
773-514 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-11-30   

1 2 3 4 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.