Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 587

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

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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