Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: PEORILPJX1Y

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-503 0 Mendota IL 6529 T-MOBILE USA, INC. 368      
815-503 4 Mendota IL 6529 T-MOBILE USA, INC. 368   2011-04-14   
815-503 5 Mendota IL 6529 T-MOBILE USA, INC. 368   2018-05-09   
815-503 6 Mendota IL 5562 METROPCS, INC. 368   2020-09-30   
815-503 7 Mendota IL 6529 T-MOBILE USA, INC. 368   2012-10-12   
815-503 9 Mendota IL 6529 T-MOBILE USA, INC. 368      
815-615 2 Mendota IL 6529 T-MOBILE USA, INC. 368   2021-03-20   
815-719 A Princeton IL 5562 METROPCS, INC. 368      
815-719 0 Princeton IL 5562 METROPCS, INC. 368      
815-719 1 Princeton IL 5562 METROPCS, INC. 368      

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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