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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-257 A Streator IL BLTNILXDX9Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 366      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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