Local Calling Guide

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

NXX: 354

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-354 A Tillamook OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-354 0 Tillamook OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2008-11-29   
503-354 1 Tillamook OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2013-08-16   
503-354 2 Tillamook OR   792K CHARTER IP ENABLED SERVICES, LLC 672   2008-04-16   
503-354 3 Tillamook OR PTLDORWAXKY  936F ASTOUND BROADBAND, LLC - OR 672   2017-01-29   
503-354 4 Tillamook OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2010-02-24   
503-354 5 Tillamook OR   792K CHARTER IP ENABLED SERVICES, LLC 672   2013-10-24   
503-354 6 Tillamook OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2018-08-10   
503-354 7 Tillamook OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2015-04-22   
503-354 8 Tillamook OR   660C HUNTER CONSTRUCTION, INC. DBA HUNTER COMMS - OR 672   2015-06-06   
503-354 9 Tillamook OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2018-08-10   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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