Local Calling Guide

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

NXX: 966

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-966 A Westport OR PTLDORWADS2  750E ONVOY, LLC - OR 672      
503-966 0 Westport OR   750E ONVOY, LLC - OR 672   2020-11-10   
503-966 1 Westport OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2015-11-14   
503-966 2 Westport OR   750E ONVOY, LLC - OR 672   2016-04-23   
503-966 3 Westport OR   750E ONVOY, LLC - OR 672   2016-04-18   
503-966 4 Westport OR   750E ONVOY, LLC - OR 672   2016-04-18   
503-966 5 Westport OR   750E ONVOY, LLC - OR 672   2015-09-28   
503-966 6 Westport OR   508J CENTURYLINK COMMUNICATIONS, LLC 672   2014-02-19   
503-966 7 Westport OR   750E ONVOY, LLC - OR 672   2007-09-21   
503-966 8 Westport OR   750E ONVOY, LLC - OR 672   2016-04-23   
503-966 9 Westport OR   750E ONVOY, LLC - OR 672   2012-09-26   

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

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