Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 925

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-925 A Hennepin IL HNPNILXBRS0  1015 FRONTIER NORTH, INC. - IL 368      
815-925 1 Hennepin IL   495J STRATUS NETWORKS 368   2020-08-02   
815-925 2 Hennepin IL   1015 FRONTIER NORTH, INC. - IL 368      
815-925 3 Hennepin IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 368   2010-04-15   
815-925 5 Hennepin IL   624H ONVOY SPECTRUM, LLC 368   2024-12-02   
815-925 6 Hennepin IL   508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-03   
815-925 7 Hennepin IL   1015 FRONTIER NORTH, INC. - IL 368      
815-925 8 Hennepin IL   145J TERRA NOVA TELECOM INC. 368   2025-12-15   
815-925 9 Hennepin IL   1015 FRONTIER NORTH, INC. - IL 368      

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

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