Local Calling Guide

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

NXX: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-500 A Portland OR PTLDORPBGT0  794G TELTRUST CORPORATION - OR 672      
503-500 0 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 1 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 2 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 3 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 4 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 5 Portland OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2009-06-06   
503-500 6 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 7 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 8 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   
503-500 9 Portland OR   624H ONVOY SPECTRUM, LLC 672   2022-01-05   

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

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