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: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-574 A Aviston IL COVLILCL0MD  516C AT&T CORP. 520      
618-574 0 Aviston IL   073H TELNYX LLC 520   2021-02-27   
618-574 1 Aviston IL   224C ONVOY, LLC 520   2016-09-07   
618-574 2 Aviston IL   224C ONVOY, LLC 520   2016-09-07   
618-574 3 Aviston IL   624H ONVOY SPECTRUM, LLC 520   2021-07-02   
618-574 4 Aviston IL   075A DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 520   2021-02-28   
618-574 5 Aviston IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520   2022-06-18   
618-574 7 Aviston IL   516C AT&T CORP. 520   2010-01-21   
618-574 8 Aviston IL   224C ONVOY, LLC 520   2021-07-05   
618-574 9 Aviston IL   224C ONVOY, LLC 520   2021-08-12   

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

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