Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Sefton, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-347 A SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 0 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 1 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 2 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 3 STLSMOWQDS2  224C ONVOY, LLC 520   2018-07-29   
618-347 4 STLSMOWQDS2  224C ONVOY, LLC 520   2019-07-28   
618-347 5 COVLILCQXEX  508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-02-11   
618-347 6 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 7 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 8 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-347 9 SFTNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-575 A STLSMO05RMD  984E BANDWIDTH.COM CLEC, LLC - IL 520      
618-575 0 STLSMO05RMD  984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-07-24   
618-575 1 STLSMOWQ8MD  073H TELNYX LLC 520   2020-07-27   
618-575 5 STLSMOWQDS2  224C ONVOY, LLC 520   2021-02-26   
618-575 8 COVLILCQXMX  495J STRATUS NETWORKS 520   2021-12-13   
618-575 9 STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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