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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-343 A Clackamas OR PTLDORWA0MD  8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 0 Clackamas OR   8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 1 Clackamas OR   8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 2 Clackamas OR   8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 3 Clackamas OR   8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 4 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2002-05-08   
503-343 5 Clackamas OR   8656 GLOBAL CROSSING LOCAL SERVICES, INC.-OR 672      
503-343 6 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 7 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 8 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-343 9 Clackamas OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2005-01-11   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.