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: 575

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-575 A Sefton IL STLSMO05RMD  984E BANDWIDTH.COM CLEC, LLC - IL 520      
618-575 0 Sefton IL STLSMO05RMD  984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-07-24   
618-575 1 Sefton IL STLSMOWQ8MD  073H TELNYX LLC 520   2020-07-27   
618-575 5 Sefton IL STLSMOWQDS2  224C ONVOY, LLC 520   2021-02-26   
618-575 7 Sefton IL   145J TERRA NOVA TELECOM INC. 520   2025-05-31   
618-575 8 Sefton IL COVLILCQXMX  495J STRATUS NETWORKS 520   2021-12-13   
618-575 9 Sefton IL STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-04   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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