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: 863

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-863 A Calhoun IL CLHNILXERS0  1036 FRONTIER NORTH, INC. - IL 978      
618-863 0 Calhoun IL   224C ONVOY, LLC 978   2020-03-13   
618-863 1 Calhoun IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 978   2014-07-15   
618-863 2 Calhoun IL   1036 FRONTIER NORTH, INC. - IL 978      
618-863 3 Calhoun IL   9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 978   2003-06-04   
618-863 4 Calhoun IL   224C ONVOY, LLC 978   2021-08-12   
618-863 5 Calhoun IL   624H ONVOY SPECTRUM, LLC 978   2023-07-29   
618-863 8 Calhoun IL   224C ONVOY, LLC 978   2021-04-09   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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