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: 907

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-907 A Gresham OR PTLEORTEPS0  7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672      
503-907 0 Gresham OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672      
503-907 1 Gresham OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672      
503-907 2 Gresham OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2006-05-19   
503-907 3 Gresham OR   7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2009-11-30   
503-907 4 Gresham OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2016-04-15   
503-907 5 Gresham OR   750E ONVOY, LLC - OR 672      
503-907 6 Gresham OR   750E ONVOY, LLC - OR 672      
503-907 7 Gresham OR   750E ONVOY, LLC - OR 672      
503-907 8 Gresham OR   750E ONVOY, LLC - OR 672      
503-907 9 Gresham OR   750E ONVOY, LLC - OR 672      

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

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