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: 581

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-581 A Lowell OR EUGNOR53ZMD  076F BANDWIDTH.COM CLEC, LLC - OR 670      
541-581 0 Lowell OR   076F BANDWIDTH.COM CLEC, LLC - OR 670   2015-07-03   
541-581 1 Lowell OR   750E ONVOY, LLC - OR 670   2016-04-05   
541-581 2 Lowell OR   750E ONVOY, LLC - OR 670   2016-04-05   
541-581 3 Lowell OR   792K CHARTER IP ENABLED SERVICES, LLC 670   2017-09-11   
541-581 4 Lowell OR   073H TELNYX LLC 670   2021-02-28   
541-581 5 Lowell OR   826H INTEGRATED PATH COMMUNICATIONS-OREGON, LLC - OR 670   2018-08-07   
541-581 6 Lowell OR   624H ONVOY SPECTRUM, LLC 670   2021-12-13   
541-581 7 Lowell OR   508J CENTURYLINK COMMUNICATIONS, LLC 670   2016-09-07   
541-581 8 Lowell OR   750E ONVOY, LLC - OR 670   2019-09-20   
541-581 9 Lowell OR   624H ONVOY SPECTRUM, LLC 670   2021-12-13   

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

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