Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-270 A Cincinnati IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-07-02   
641-270 0 Cincinnati IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-07-02   
641-270 1 Cincinnati IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2025-11-14   

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

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