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: 776

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-776 A Aurora OR PTLEORXMDS2  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-776 0 Aurora OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2008-11-29   
503-776 1 Aurora OR   508J CENTURYLINK COMMUNICATIONS LLC 672   2013-11-26   
503-776 2 Aurora OR PTLEORXMDS2  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-776 3 Aurora OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2014-01-02   
503-776 4 Aurora OR PTLDORWAXCY  647F ELTOPIA COMMUNICATIONS LLC - OR 672   2010-07-17   
503-776 5 Aurora OR PTLDOR13XFX  318J COMCAST IP PHONE LLC 672   2011-07-15   
503-776 6 Aurora OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-17   
503-776 7 Aurora OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2008-02-04   
503-776 8 Aurora OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2010-12-20   
503-776 9 Aurora OR WDBNORBQDS0  936F ASTOUND BROADBAND, LLC - OR 672   2009-07-20   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.