Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]

NXX: 534

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-534 A Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 0 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 1 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 2 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 3 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 4 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 5 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 6 Clackamas OR   750E ONVOY, LLC - OR 672   2009-10-02   
503-534 7 Clackamas OR LKOSOR62DS0  9638 QWEST CORPORATION 672      
503-534 8 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-534 9 Clackamas OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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