Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 458 [Rate centres in NPA 458] [Dial plan for NPA 458]

NXX: 354

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
458-354 A Klamath Falls OR   6010 NEW CINGULAR WIRELESS PCS, LLC 670   2025-12-26   
458-354 9 Klamath Falls OR   6010 NEW CINGULAR WIRELESS PCS, LLC 670   2025-12-26   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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