Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CMTNILXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-497 A Compton IL 1015 FRONTIER NORTH, INC. - IL 368      
815-497 1 Compton IL 1015 FRONTIER NORTH, INC. - IL 368      
815-497 2 Compton IL 1015 FRONTIER NORTH, INC. - IL 368      
815-497 9 Compton IL 1015 FRONTIER NORTH, INC. - IL 368      

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

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