Local Calling Guide

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

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-331 A McHenry IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 0 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 1 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 2 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 3 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 4 McHenry IL   939H COMMIO, LLC 358   2021-10-14   
815-331 5 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 6 McHenry IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-331 7 McHenry IL   939H COMMIO, LLC 358   2021-10-14   
815-331 8 McHenry IL   318J COMCAST IP PHONE, LLC 358   2012-06-19   
815-331 9 McHenry IL   145J TERRA NOVA TELECOM INC. 358   2022-12-17   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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