Local Calling Guide

Area code/prefix search

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

NXX: 879

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-879 A Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 0 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 1 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 2 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 3 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 4 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 5 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 6 Grand Ronde OR GRRNORXARS0  4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 7 Grand Ronde OR PTLDORWAXKY  936F ASTOUND BROADBAND, LLC - OR 672   2009-07-20   
503-879 8 Grand Ronde OR PTLDORWAXDX  508J CENTURYLINK COMMUNICATIONS, LLC 672   2013-11-27   
503-879 9 Grand Ronde OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2023-03-13   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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