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: 797

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-797 A Green Ridge MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-797 0 Green Ridge MO   993E BANDWIDTH.COM CLEC, LLC - MO 524   2009-01-17   
660-797 4 Green Ridge MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-797 7 Green Ridge MO   145J TERRA NOVA TELECOM INC. 524   2025-07-26   

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

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