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: 330

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
458-330 A Philomath OR EUGNORAEGMD  6010 NEW CINGULAR WIRELESS PCS, LLC 670   2024-09-02   
458-330 8 Philomath OR EUGNORAEGMD  6010 NEW CINGULAR WIRELESS PCS, LLC 670   2024-09-02   
458-330 9 Philomath OR EUGNORAEGMD  6010 NEW CINGULAR WIRELESS PCS, LLC 670   2024-09-02   

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

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