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: 697

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-697 A Blackburn MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524      
660-697 6 Blackburn MO   093F ONVOY, LLC - MO 524   2018-10-28   
660-697 7 Blackburn MO   093F ONVOY, LLC - MO 524   2021-03-07   

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

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