Local Calling Guide

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

NXX: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-991 A Salem OR PTLJORIY0MD  5562 METROPCS, INC. 672      
503-991 0 Salem OR PTLJORIY0MD  5562 METROPCS, INC. 672      
503-991 1 Salem OR PTLJORIY0MD  5562 METROPCS, INC. 672      
503-991 2 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2008-09-04   
503-991 3 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2008-09-14   
503-991 4 Salem OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2006-04-06   
503-991 5 Salem OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2007-04-05   
503-991 6 Salem OR PTLJORIY0MD  5562 METROPCS, INC. 672      
503-991 7 Salem OR PTLJORIY0MD  5562 METROPCS, INC. 672      
503-991 8 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2009-06-06   
503-991 9 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2008-10-10   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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