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: 634

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-634 A Karnak IL KRNKILXERS0  1015 FRONTIER NORTH, INC. - IL 362      
618-634 0 Karnak IL   9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 362   2003-02-03   
618-634 1 Karnak IL   073H TELNYX LLC 362   2020-07-13   
618-634 2 Karnak IL   1015 FRONTIER NORTH, INC. - IL 362      
618-634 3 Karnak IL   1015 FRONTIER NORTH, INC. - IL 362      
618-634 4 Karnak IL   224C ONVOY, LLC 362   2018-10-01   
618-634 5 Karnak IL   224C ONVOY, LLC 362   2021-04-03   
618-634 6 Karnak IL   224C ONVOY, LLC 362   2019-09-07   
618-634 7 Karnak IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 362   2004-07-02   
618-634 8 Karnak IL   495J STRATUS NETWORKS 362   2020-12-19   
618-634 9 Karnak IL   1015 FRONTIER NORTH, INC. - IL 362      

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

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