Local Calling Guide

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

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-388 A Portland OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672      
503-388 0 Portland OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2009-06-06   
503-388 1 Portland OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2009-07-27   
503-388 2 Portland OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2009-07-27   
503-388 3 Portland OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2010-03-25   
503-388 4 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2011-01-05   
503-388 5 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-05-30   
503-388 6 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-06-19   
503-388 7 Portland OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2010-02-22   
503-388 8 Portland OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2010-03-22   
503-388 9 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-06-19   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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