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: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-541 A Brookings OR CSBYORXXX1X  750E ONVOY, LLC - OR 670   2024-10-18   
541-541 0 Brookings OR   750E ONVOY, LLC - OR 670   2024-10-18   
541-541 1 Brookings OR   750E ONVOY, LLC - OR 670   2024-10-19   
541-541 2 Brookings OR   750E ONVOY, LLC - OR 670   2026-01-09   
541-541 5 Brookings OR   750E ONVOY, LLC - OR 670   2026-01-09   
541-541 7 Brookings OR   750E ONVOY, LLC - OR 670   2026-01-09   
541-541 8 Brookings OR   750E ONVOY, LLC - OR 670   2024-12-15   
541-541 9 Brookings OR   750E ONVOY, LLC - OR 670   2025-02-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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