Local Calling Guide

Area code/prefix search

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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 430

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-430 A McHenry IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358      

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

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