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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-256 A Heppner OR LNBHWAAA0MD  6349 UNITED STATES CELLULAR - OR 672      
541-256 0 Heppner OR   6349 UNITED STATES CELLULAR - OR 672      
541-256 1 Heppner OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-256 2 Heppner OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-256 3 Heppner OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-256 4 Heppner OR   750E ONVOY, LLC - OR 672   2019-01-24   
541-256 5 Heppner OR   624H ONVOY SPECTRUM, LLC 672   2021-05-22   
541-256 6 Heppner OR   6349 UNITED STATES CELLULAR - OR 672      
541-256 7 Heppner OR   508J CENTURYLINK COMMUNICATIONS, LLC 672   2013-11-26   
541-256 8 Heppner OR   624H ONVOY SPECTRUM, LLC 672   2021-05-22   
541-256 9 Heppner OR   624H ONVOY SPECTRUM, LLC 672   2021-05-22   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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