Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 208

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-208 A Portland OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672      
503-208 0 Portland OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2009-01-04   
503-208 1 Portland OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2009-01-05   
503-208 2 Portland OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2009-04-08   
503-208 3 Portland OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2009-04-08   
503-208 4 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-02-21   
503-208 5 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-02-21   
503-208 6 Portland OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2010-02-21   
503-208 7 Portland OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2010-02-22   
503-208 8 Portland OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672   2009-01-05   
503-208 9 Portland OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2010-02-22   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.