Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGIL249MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-815 A Chicago Zone 01-Calumet IL 996H AIRESPRING, INC. 358      
312-815 0 Chicago Zone 01-Calumet IL 996H AIRESPRING, INC. 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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