Local Calling Guide

Area code/prefix search

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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-379 A Walnut IL WLNTILXADS0  1015 FRONTIER NORTH, INC. - IL 368      
815-379 1 Walnut IL   073H TELNYX LLC 368   2020-07-20   
815-379 2 Walnut IL   1015 FRONTIER NORTH, INC. - IL 368      
815-379 3 Walnut IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 368   2010-04-15   
815-379 4 Walnut IL   224C ONVOY, LLC 368   2024-12-30   
815-379 5 Walnut IL   624H ONVOY SPECTRUM, LLC 368   2024-12-02   
815-379 6 Walnut IL   495J STRATUS NETWORKS 368   2020-08-03   
815-379 7 Walnut IL   508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-06   
815-379 8 Walnut IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-05   
815-379 9 Walnut IL   1015 FRONTIER NORTH, INC. - IL 368      

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

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