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: 499

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-499 A Sterling IL DKLBILRS3MD  6265 UNITED STATES CELLULAR - IL 364      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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