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: 771

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-771 A Maryville MO RCPTMO020MD  454H MIDWEST DATA CENTER, INC. - MO 524      
660-771 0 Maryville MO RCPTMO020MD  454H MIDWEST DATA CENTER, INC. - MO 524   2015-03-19   
660-771 1 Maryville MO   145J TERRA NOVA TELECOM INC. 524   2025-07-19   
660-771 6 Maryville MO KSCYMO09YMD  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 524   2019-09-30   

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

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