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.

Herscher, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
779-258 A CHCGIL24DS6  224C ONVOY, LLC 358      
779-258 0 CHCGIL24DS6  224C ONVOY, LLC 358      
779-258 1 CHCGILWUJMD  073H TELNYX LLC 358      
779-258 2 CHCGIL24DS6  224C ONVOY, LLC 358      
779-258 3 CHCGIL24DS6  224C ONVOY, LLC 358      
779-258 4 CHCGIL24DS6  224C ONVOY, LLC 358      
779-258 6 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
779-258 8   624H ONVOY SPECTRUM, LLC 358      
779-258 9 CHCGIL24XMD  495J STRATUS NETWORKS 358      
815-421 A HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-421 0 HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-421 1 CHCGIL24DS6  224C ONVOY, LLC 358      
815-421 2   829J PAETEC ITEL, LLC 358      
815-421 3 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
815-421 4 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
815-421 5   460K FIRST COMMUNICATIONS, LLC 358      
815-421 7 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
815-421 8 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358      
815-421 9 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
815-426 A HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-426 0 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
815-426 1 CHCGIL24DS6  224C ONVOY, LLC 358      
815-426 2 HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-426 4 CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
815-426 5 CHCGILCLXOX  516C AT&T CORP. 358      
815-426 6 HRSCILHRRS1  9329 ILLINOIS BELL TEL CO 358      
815-426 7 OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-426 8 CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
815-426 9 CHCGIL24DS6  224C ONVOY, LLC 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.