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: 684

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-684 A Jamesport MO PRTNMOXADS0  1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 0 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 1 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 2 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 3 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 4 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 5 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 6 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      
660-684 7 Jamesport MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2026-04-15   
660-684 9 Jamesport MO   1888 GRAND RIVER MUTUAL TEL CO 524      

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

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