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: 477

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-477 A Coal MO COALMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-477 0 Coal MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-477 1 Coal MO   093F ONVOY, LLC - MO 524   2020-11-09   
660-477 3 Coal MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-477 4 Coal MO   093F ONVOY, LLC - MO 524   2018-10-28   
660-477 5 Coal MO   093F ONVOY, LLC - MO 524   2019-12-14   
660-477 6 Coal MO   093F ONVOY, LLC - MO 524   2019-12-14   
660-477 7 Coal MO   145J TERRA NOVA TELECOM INC. 524   2025-07-21   
660-477 8 Coal MO   093F ONVOY, LLC - MO 524   2020-11-09   
660-477 9 Coal MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      

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

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