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: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-677 A Armstrong MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-677 1 Armstrong MO KSCYMO55XYY  624H ONVOY SPECTRUM, LLC 524   2025-01-12   
660-677 2 Armstrong MO KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-10-18   
660-677 4 Armstrong MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-677 6 Armstrong MO KSCYMO55XXX  093F ONVOY, LLC - MO 524   2021-01-06   
660-677 7 Armstrong MO KSCYMO55X0Z  965H FRACTEL, LLC 524   2019-11-14   
660-677 8 Armstrong MO KSCYMO09QMD  516C AT&T CORP. 524   2023-10-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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