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: 770

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-770 A Charbonneau OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-770 0 Charbonneau OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672   2008-11-29   
503-770 1 Charbonneau OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-770 2 Charbonneau OR PTLDORWAXDX  508J CENTURYLINK COMMUNICATIONS, LLC 672   2013-11-26   
503-770 3 Charbonneau OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-770 4 Charbonneau OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-17   
503-770 5 Charbonneau OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-17   
503-770 6 Charbonneau OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2012-12-17   
503-770 7 Charbonneau OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2015-08-14   
503-770 8 Charbonneau OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2011-03-14   
503-770 9 Charbonneau OR PTLDORWAXCY  647F ELTOPIA COMMUNICATIONS LLC - OR 672   2010-07-17   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.