Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 349

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-349 A Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-10-11   
331-349 9 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-10-11   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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