Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 330 [Rate centres in NPA 330] [Dial plan for NPA 330]

NXX: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
330-501 A Youngstown OH YNTWOH78ZMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 322      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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