Local Calling Guide

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

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-343 A Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 0 Clackamas OR   750E ONVOY, LLC - OR 672   2025-09-06   
503-343 1 Clackamas OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2024-11-02   
503-343 2 Clackamas OR PTLDOR13X9X  145J TERRA NOVA TELECOM INC. 672   2024-08-12   
503-343 3 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 4 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2002-05-08   
503-343 5 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 6 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 7 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 8 Clackamas OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2020-10-04   
503-343 9 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2005-01-11   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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