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: 831

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-831 A Marshall MO MRSHMOGADS0  9533 SOUTHWESTERN BELL 524      
660-831 0 Marshall MO   9533 SOUTHWESTERN BELL 524      
660-831 1 Marshall MO   9533 SOUTHWESTERN BELL 524      
660-831 2 Marshall MO   318J COMCAST IP PHONE, LLC 524   2025-08-20   
660-831 3 Marshall MO   9533 SOUTHWESTERN BELL 524      
660-831 4 Marshall MO   9533 SOUTHWESTERN BELL 524      
660-831 5 Marshall MO   9533 SOUTHWESTERN BELL 524      
660-831 6 Marshall MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524   2018-11-08   
660-831 8 Marshall MO   093F ONVOY, LLC - MO 524   2004-02-04   
660-831 9 Marshall MO   093F ONVOY, LLC - MO 524   2024-07-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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