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: 425

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-425 A Portland OR PTLDOR69DS0  9638 QWEST CORPORATION 672      
503-425 0 Portland OR   9638 QWEST CORPORATION 672      
503-425 1 Portland OR   9638 QWEST CORPORATION 672      
503-425 2 Portland OR   9638 QWEST CORPORATION 672      
503-425 3 Portland OR   9638 QWEST CORPORATION 672      
503-425 4 Portland OR   9638 QWEST CORPORATION 672      
503-425 5 Portland OR   9638 QWEST CORPORATION 672      
503-425 6 Portland OR   9638 QWEST CORPORATION 672      
503-425 7 Portland OR   9638 QWEST CORPORATION 672      
503-425 8 Portland OR   9638 QWEST CORPORATION 672      
503-425 9 Portland OR   6529 T-MOBILE USA, INC. 672   2004-07-10   

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

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