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: 545

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-545 A Centralia IL CENLILCEDS0  9329 ILLINOIS BELL TEL CO 520      
618-545 0 Centralia IL   9329 ILLINOIS BELL TEL CO 520      
618-545 1 Centralia IL   9329 ILLINOIS BELL TEL CO 520      
618-545 2 Centralia IL   624H ONVOY SPECTRUM, LLC 520   2021-12-10   
618-545 3 Centralia IL   9329 ILLINOIS BELL TEL CO 520      
618-545 4 Centralia IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 520   2019-06-17   
618-545 5 Centralia IL   145J TERRA NOVA TELECOM INC. 520   2021-09-24   
618-545 6 Centralia IL   9329 ILLINOIS BELL TEL CO 520      
618-545 7 Centralia IL   224C ONVOY, LLC 520   2016-09-07   
618-545 8 Centralia IL   224C ONVOY, LLC 520   2016-09-07   
618-545 9 Centralia IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2002-10-02   

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

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