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: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-431 A Vandalia IL STLSMOWQDS2  224C ONVOY, LLC 520      
618-431 0 Vandalia IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520   2013-04-27   
618-431 1 Vandalia IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520   2013-04-27   
618-431 2 Vandalia IL   145J TERRA NOVA TELECOM INC. 520   2021-10-17   
618-431 3 Vandalia IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2015-08-11   
618-431 4 Vandalia IL   984E BANDWIDTH.COM CLEC, LLC - IL 520   2018-10-08   
618-431 5 Vandalia IL   224C ONVOY, LLC 520   2016-09-07   
618-431 6 Vandalia IL   224C ONVOY, LLC 520   2016-09-07   
618-431 7 Vandalia IL   224C ONVOY, LLC 520   2016-04-11   
618-431 8 Vandalia IL   224C ONVOY, LLC 520   2016-04-11   
618-431 9 Vandalia IL   073H TELNYX LLC 520   2018-07-19   

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

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