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: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-437 A Elgin OR ELGNORXXRS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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