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: 455

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-455 A Westport OR WSPTOR64DS0  9638 QWEST CORPORATION 672      
503-455 0 Westport OR   9638 QWEST CORPORATION 672      
503-455 1 Westport OR   9638 QWEST CORPORATION 672      
503-455 2 Westport OR   9638 QWEST CORPORATION 672      
503-455 3 Westport OR   9638 QWEST CORPORATION 672      
503-455 4 Westport OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2011-12-24   
503-455 5 Westport OR   750E ONVOY, LLC - OR 672   2012-12-16   
503-455 6 Westport OR   750E ONVOY, LLC - OR 672   2012-12-16   
503-455 7 Westport OR   750E ONVOY, LLC - OR 672   2012-12-16   
503-455 8 Westport OR   157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2014-10-12   
503-455 9 Westport OR   9638 QWEST CORPORATION 672      

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

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