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 11-O'Hare, IL

1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-249 A CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-249 0 CHCGILWUJMD  073H TELNYX LLC 358   2019-03-18   
773-249 1 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-10-29   
773-249 2 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-05-12   
773-249 3 CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2004-11-12   
773-249 4 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-06-03   
773-249 5 CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2008-07-02   
773-249 6 CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-22   
773-249 7 CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-22   
773-249 8 CHCGIL24DS6  224C ONVOY, LLC 358   2010-02-26   
773-249 9 CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-22   
773-337 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 0 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 1 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 2 CHCGILWUJMD  073H TELNYX LLC 358   2019-12-04   
773-337 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 4 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 5 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 6 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-337 7 CHCGILWUJMD  073H TELNYX LLC 358   2017-04-24   
773-337 8 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-08-20   
773-337 9 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-357 A CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358      
773-357 0 CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358      
773-357 1   145J TERRA NOVA TELECOM INC. 358   2022-05-23   
773-357 2 CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-07-03   
773-357 3 CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2004-09-12   
773-357 4 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2006-01-20   
773-357 5 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-05   
773-357 8 CHCGIL24DS6  224C ONVOY, LLC 358   2010-05-20   
773-357 9 CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358      
773-377 A CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-377 0 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-377 1 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-377 2 CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-377 3 CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-22   
773-377 4 CHCGIL24DS6  224C ONVOY, LLC 358   2016-05-22   
773-377 5 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-01-01   
773-377 6 OKBRILDODS0  259E YMAX COMMUNICATIONS CORP. - IL 358   2011-06-22   
773-377 7 CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358   2014-02-21   
773-377 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-09-24   
773-377 9 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2016-10-13   
773-453 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-453 0 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-453 1 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-453 2 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-05-19   
773-453 3 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-453 4 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-06-01   

1 2 3 4 5 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.