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: 823

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-823 A Joliet IL EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
815-823 1 Joliet IL   145J TERRA NOVA TELECOM INC. 358   2025-10-05   
815-823 2 Joliet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-01   
815-823 3 Joliet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-01   
815-823 4 Joliet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-01   
815-823 5 Joliet IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2004-03-01   
815-823 6 Joliet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2004-07-10   
815-823 7 Joliet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2004-07-10   
815-823 8 Joliet IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
815-823 9 Joliet IL ELGNILOTGT5  5562 METROPCS, INC. 358   2005-01-17   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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