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: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-328 A Dow IL BLVLILAJ3MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520      
618-328 0 Dow IL   984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-04-12   
618-328 1 Dow IL   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
618-328 2 Dow IL   224C ONVOY, LLC 520   2018-07-29   
618-328 3 Dow IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2005-03-10   
618-328 4 Dow IL   224C ONVOY, LLC 520   2019-07-29   
618-328 5 Dow IL   224C ONVOY, LLC 520   2019-07-29   
618-328 6 Dow IL   224C ONVOY, LLC 520   2021-02-26   
618-328 7 Dow IL   508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-01-21   
618-328 8 Dow IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2015-07-12   
618-328 9 Dow IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2017-02-23   

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

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