Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-587 A TLDNILXERS0  1015 FRONTIER NORTH, INC. - IL 362      
618-587 0   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 362   2010-05-09   
618-587 1   1015 FRONTIER NORTH, INC. - IL 362      
618-587 2   1015 FRONTIER NORTH, INC. - IL 362      
618-587 7   145J TERRA NOVA TELECOM INC. 362   2025-08-02   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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