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: 458 [Rate centres in NPA 458] [Dial plan for NPA 458]

NXX: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
458-289 A Ontario OR FRLDID020MD  782H FARMERS MUTUAL TELEPHONE COMPANY - OR 652      
458-289 0 Ontario OR   782H FARMERS MUTUAL TELEPHONE COMPANY - OR 652   2022-10-17   
458-289 1 Ontario OR BOISIDMAXEY  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 652   2024-11-22   
458-289 8 Ontario OR   750E ONVOY, LLC - OR 652   2025-02-02   
458-289 9 Ontario OR   750E ONVOY, LLC - OR 652   2025-04-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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