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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-577 A Breese IL COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520      
618-577 0 Breese IL   984E BANDWIDTH.COM CLEC, LLC - IL 520   2019-06-28   
618-577 1 Breese IL   495J STRATUS NETWORKS 520   2020-12-18   
618-577 2 Breese IL   224C ONVOY, LLC 520   2019-09-07   
618-577 3 Breese IL   224C ONVOY, LLC 520   2019-09-07   
618-577 4 Breese IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520   2020-06-21   
618-577 5 Breese IL   224C ONVOY, LLC 520   2021-02-12   
618-577 6 Breese IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 520   2022-08-05   
618-577 8 Breese IL   075A DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 520   2021-04-01   
618-577 9 Breese IL   073H TELNYX LLC 520   2021-02-27   

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

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