Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 858

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-858 A Florence MO FLRNMOXAPS0  1885 WINDSTREAM MISSOURI, INC. 524      
660-858 0 Florence MO KSCYMO55XYY  624H ONVOY SPECTRUM, LLC 524   2024-03-20   
660-858 1 Florence MO   792K CHARTER IP ENABLED SERVICES, LLC 524   2025-07-27   
660-858 5 Florence MO   145J TERRA NOVA TELECOM INC. 524   2025-07-26   
660-858 8 Florence MO KSCYKSJOSMD  993E BANDWIDTH.COM CLEC, LLC - MO 524   2020-03-01   
660-858 9 Florence MO FLRNMOXAPS0  1885 WINDSTREAM MISSOURI, INC. 524   2016-09-26   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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