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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Oregon, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-446 A ORGNMOXADS0  1935 OREGON FARMERS MUTUAL TEL. CO. 524      
660-669 A KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-669 0 INDPMOBHBMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524   2024-10-17   
660-669 7 KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2023-07-02   
660-669 9   145J TERRA NOVA TELECOM INC. 524   2025-08-01   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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