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: 984

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-984 A Royalton IL RYTNILXERS0  1015 FRONTIER NORTH, INC. - IL 362      
618-984 0 Royalton IL   073H TELNYX LLC 362   2020-07-19   
618-984 1 Royalton IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 362   2010-05-09   
618-984 2 Royalton IL   1015 FRONTIER NORTH, INC. - IL 362      
618-984 3 Royalton IL   624H ONVOY SPECTRUM, LLC 362   2023-06-30   
618-984 4 Royalton IL   224C ONVOY, LLC 362   2021-07-30   
618-984 5 Royalton IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 362   2004-07-17   
618-984 6 Royalton IL   224C ONVOY, LLC 362   2019-09-08   
618-984 7 Royalton IL   1015 FRONTIER NORTH, INC. - IL 362      
618-984 8 Royalton IL   224C ONVOY, LLC 362   2018-10-01   
618-984 9 Royalton IL   495J STRATUS NETWORKS 362   2020-12-19   

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

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