Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: KRLDILXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-522 A Kirkland IL 1036 FRONTIER NORTH, INC. - IL 364      
815-522 2 Kirkland IL 1036 FRONTIER NORTH, INC. - IL 364      
815-522 3 Kirkland IL 1036 FRONTIER NORTH, INC. - IL 364      
815-522 6 Kirkland IL 1036 FRONTIER NORTH, INC. - IL 364      
815-522 9 Kirkland IL 1036 FRONTIER NORTH, INC. - IL 364      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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