Local Calling Guide

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West Salem, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-456 A WSLMILXEDS0  1036 FRONTIER NORTH, INC. - IL 978      
618-456 0 OLNYILXEEMD  9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 978   2003-02-05   
618-456 1 OLNYILXEGMD  224C ONVOY, LLC 978   2020-03-13   
618-456 2 WSLMILXEDS0  1036 FRONTIER NORTH, INC. - IL 978      
618-456 3 WSLMILXEDS0  1036 FRONTIER NORTH, INC. - IL 978      
618-456 4 OLNYILXEX2X  624H ONVOY SPECTRUM, LLC 978   2023-07-29   
618-456 6 OLNYILABQMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 978   2015-07-12   
618-456 7 OLNYILXEGMD  224C ONVOY, LLC 978   2021-04-09   
618-456 8 WSLMILXEDS0  1036 FRONTIER NORTH, INC. - IL 978      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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