Local Calling Guide

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

NXX: 470

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-470 A Seaside OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672      
503-470 0 Seaside OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672      
503-470 1 Seaside OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2011-03-13   
503-470 2 Seaside OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-16   
503-470 3 Seaside OR PTLDOR69X9X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 672   2011-11-01   
503-470 4 Seaside OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-16   
503-470 5 Seaside OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2012-12-31   
503-470 6 Seaside OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2006-12-02   
503-470 7 Seaside OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2006-10-12   
503-470 8 Seaside OR THDLORXADMD  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672   2013-01-02   
503-470 9 Seaside OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672      

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

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