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: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-285 A Ionia MO IONIMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-285 0 Ionia MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-285 1 Ionia MO   073H TELNYX LLC 524   2020-07-31   
660-285 2 Ionia MO   093F ONVOY, LLC - MO 524   2021-03-07   
660-285 3 Ionia MO   1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-285 4 Ionia MO   093F ONVOY, LLC - MO 524   2019-12-14   
660-285 5 Ionia MO   093F ONVOY, LLC - MO 524   2019-12-14   
660-285 6 Ionia MO   093F ONVOY, LLC - MO 524   2021-03-07   
660-285 7 Ionia MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2013-11-04   
660-285 8 Ionia MO   093F ONVOY, LLC - MO 524   2021-12-05   
660-285 9 Ionia MO   093F ONVOY, LLC - MO 524   2023-07-31   

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

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