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 05-Merrimac, IL

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-836 A CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 0 CHCGIL24DS6  224C ONVOY, LLC 358   2021-12-24   
773-836 1 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 2 CHCGIL24DS6  224C ONVOY, LLC 358   2021-12-24   
773-836 3 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 4 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 5 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 6   400G CLEAR RATE COMMUNICATIONS, INC. - IL 358   2012-06-10   
773-836 7 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 8 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-836 9 CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      
773-887 A BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-887 0 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2013-02-28   
773-887 1   515J IP HORIZON LLC 358   2013-05-05   
773-887 2 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-05-26   
773-887 3 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2007-01-28   
773-887 4 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2007-01-28   
773-887 5 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2007-01-28   
773-887 6 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-05-26   
773-887 7 CHCGILWUX1X  8760 US XCHANGE OF ILLINOIS LLC DBA CHOICE ONE COMM IL 358   2009-10-20   
773-887 8 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2013-09-22   
773-887 9 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
773-889 A CHCGILMEDS0  9329 ILLINOIS BELL TEL CO 358      

<< 1 2

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.