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: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-366 A Kaskaskia IL STMYMOLIRSP  9533 SOUTHWESTERN BELL 520      
618-366 0 Kaskaskia IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520   2012-10-28   
618-366 1 Kaskaskia IL   073H TELNYX LLC 520   2018-07-24   
618-366 2 Kaskaskia IL   9533 SOUTHWESTERN BELL 520      
618-366 3 Kaskaskia IL   224C ONVOY, LLC 520   2016-09-07   
618-366 5 Kaskaskia IL   939H COMMIO, LLC 520   2022-12-01   
618-366 6 Kaskaskia IL   073H TELNYX LLC 520   2023-05-12   
618-366 7 Kaskaskia IL   508J CENTURYLINK COMMUNICATIONS, LLC 520   2014-07-24   
618-366 8 Kaskaskia IL   495J STRATUS NETWORKS 520   2020-12-18   
618-366 9 Kaskaskia IL   984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-04-18   

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

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