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: 878

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-878 A Mount Carmel IL OLNYILABQMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 978      
618-878 1 Mount Carmel IL   224C ONVOY, LLC 978   2021-04-09   
618-878 2 Mount Carmel IL   224C ONVOY, LLC 978   2021-04-09   
618-878 4 Mount Carmel IL   224C ONVOY, LLC 978   2023-06-09   
618-878 6 Mount Carmel IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 978   2017-10-06   
618-878 7 Mount Carmel IL   624H ONVOY SPECTRUM, LLC 978   2023-07-29   
618-878 8 Mount Carmel IL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 978   2014-06-25   
618-878 9 Mount Carmel IL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 978   2008-08-21   

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

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