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: 593

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-593 A De Kalb IL DKLBILRSDMD  6529 T-MOBILE USA, INC. 364      
815-593 0 De Kalb IL   5562 METROPCS, INC. 364   2005-04-11   
815-593 1 De Kalb IL   6529 T-MOBILE USA, INC. 364   2013-10-28   
815-593 2 De Kalb IL   6529 T-MOBILE USA, INC. 364   2013-10-28   
815-593 3 De Kalb IL   6529 T-MOBILE USA, INC. 364   2013-10-28   
815-593 4 De Kalb IL   6529 T-MOBILE USA, INC. 364   2014-09-19   
815-593 5 De Kalb IL   6529 T-MOBILE USA, INC. 364   2014-09-19   
815-593 6 De Kalb IL   6529 T-MOBILE USA, INC. 364   2014-09-19   
815-593 7 De Kalb IL   508J CENTURYLINK COMMUNICATIONS, LLC 364   2014-07-09   
815-593 8 De Kalb IL   6529 T-MOBILE USA, INC. 364   2014-09-19   
815-593 9 De Kalb IL   224C ONVOY, LLC 364   2025-05-02   

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

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