Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 541 [Rate centres in NPA 541] [Dial plan for NPA 541]

NXX: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-548 A Redmond OR RDMDOR01DS0  9638 QWEST CORPORATION 672      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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