Local Calling Guide

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NPA: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-503 A Sherwood OR BVTNORXBX1Y  750E ONVOY, LLC - OR 672   2024-08-06   
503-503 0 Sherwood OR THDLORXABMD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2025-01-12   
503-503 1 Sherwood OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2025-09-19   
503-503 2 Sherwood OR   750E ONVOY, LLC - OR 672   2026-01-09   
503-503 3 Sherwood OR   750E ONVOY, LLC - OR 672   2026-01-09   
503-503 4 Sherwood OR   750E ONVOY, LLC - OR 672   2026-01-09   
503-503 5 Sherwood OR BVTNORXBX1Y  750E ONVOY, LLC - OR 672   2024-08-06   
503-503 6 Sherwood OR BVTNORXBX1Y  750E ONVOY, LLC - OR 672   2024-08-06   
503-503 7 Sherwood OR BVTNORXBX1Y  750E ONVOY, LLC - OR 672   2024-08-06   
503-503 8 Sherwood OR BVTNORXBXMX  624H ONVOY SPECTRUM, LLC 672   2024-10-15   
503-503 9 Sherwood OR BVTNORXBXMX  624H ONVOY SPECTRUM, LLC 672   2024-10-15   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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