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: 909

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-909 A De Kalb IL DKLBILRSDMD  6529 T-MOBILE USA, INC. 364      
815-909 0 De Kalb IL   6529 T-MOBILE USA, INC. 364   2013-10-28   
815-909 1 De Kalb IL   6529 T-MOBILE USA, INC. 364   2019-08-26   
815-909 2 De Kalb IL   6529 T-MOBILE USA, INC. 364   2021-03-01   
815-909 3 De Kalb IL   6529 T-MOBILE USA, INC. 364   2021-03-01   
815-909 4 De Kalb IL   6529 T-MOBILE USA, INC. 364   2010-08-13   
815-909 5 De Kalb IL   6529 T-MOBILE USA, INC. 364   2010-09-08   
815-909 6 De Kalb IL   6529 T-MOBILE USA, INC. 364   2010-09-08   
815-909 7 De Kalb IL   6529 T-MOBILE USA, INC. 364   2011-07-21   
815-909 8 De Kalb IL   6529 T-MOBILE USA, INC. 364   2011-07-21   
815-909 9 De Kalb IL   6529 T-MOBILE USA, INC. 364   2011-08-07   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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