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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-425 7 Portland OR PTLDOR69DS0  9638 QWEST CORPORATION 672      
503-425 8 Portland OR PTLDOR69DS0  9638 QWEST CORPORATION 672      
503-425 9 Portland OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2004-07-10   
503-426 A Portland OR PTLDORPBDS0  8294 NORTH COUNTY COMMUNICATION CORPORATION - OR 672      
503-427 A Stafford-Sandy OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-427 0 Stafford-Sandy OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2006-01-26   
503-427 1 Stafford-Sandy OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-427 2 Stafford-Sandy OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2009-04-30   
503-427 3 Stafford-Sandy OR PTLEORTEPS0  7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2005-04-08   
503-427 4 Stafford-Sandy OR PTLEORTEPS0  7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2005-04-08   
503-427 5 Stafford-Sandy OR PTLEORTEPS0  7172 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 672   2005-04-08   
503-427 6 Stafford-Sandy OR PTLDOR69X9X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 672   2007-05-20   
503-427 7 Stafford-Sandy OR PTLDOR69X9X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 672   2004-10-01   
503-427 8 Stafford-Sandy OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2008-11-29   
503-427 9 Stafford-Sandy OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2011-03-20   
503-428 A Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672      
503-428 0 Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2006-01-03   
503-428 1 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2004-09-04   
503-428 2 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2004-11-08   
503-428 3 Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2006-01-03   
503-428 4 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2005-02-06   
503-428 5 Salem OR PTLDOR13XRX  829J PAETEC ITEL, LLC 672   2003-12-13   
503-428 6 Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2005-02-25   
503-428 7 Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2005-03-28   
503-428 8 Salem OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2005-02-06   
503-428 9 Salem OR BENDOR248MD  6010 NEW CINGULAR WIRELESS PCS, LLC 672      
503-429 A Vernonia OR VRNNORXXRS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-430 A Beaverton OR TGRDORAODS0  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-430 0 Beaverton OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-430 1 Beaverton OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-430 2 Beaverton OR TGRDORAODS0  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-430 3 Beaverton OR TGRDORAODS0  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-430 4 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2011-05-07   
503-430 5 Beaverton OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-430 6 Beaverton OR TGRDORAODS0  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-430 7 Beaverton OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-430 8 Beaverton OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-430 9 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2011-07-31   
503-431 A Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 0 Beaverton OR THDLORXABMD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2007-05-14   
503-431 1 Beaverton OR THDLORXABMD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2007-03-08   
503-431 2 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 3 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 4 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 5 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 6 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 7 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 8 Beaverton OR TGRDORXACG0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-431 9 Beaverton OR THDLORXABMD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2007-03-08   
503-432 A Portland OR TGRDORAODS0  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      

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

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