Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 593

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-593 A Norborne MO NRBRMO010MD  6155 GREEN HILLS TELECOMMUNICATIONS SERVICES 524      
660-593 0 Norborne MO NRBRMO010MD  6155 GREEN HILLS TELECOMMUNICATIONS SERVICES 524      
660-593 2 Norborne MO NRBRMO010MD  6155 GREEN HILLS TELECOMMUNICATIONS SERVICES 524      
660-593 3 Norborne MO NRBRMO010MD  6155 GREEN HILLS TELECOMMUNICATIONS SERVICES 524      
660-593 4 Norborne MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-03-07   
660-593 6 Norborne MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-03-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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