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: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-343 A Smithton MO SHTNMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-343 0 Smithton MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-343 2 Smithton MO   093F ONVOY, LLC - MO 524   2021-03-07   
660-343 3 Smithton MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-343 4 Smithton MO   093F ONVOY, LLC - MO 524   2021-03-07   
660-343 5 Smithton MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-343 7 Smithton MO   093F ONVOY, LLC - MO 524   2020-07-10   
660-343 8 Smithton MO   093F ONVOY, LLC - MO 524   2020-07-10   

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

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