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: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-523 A Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 0 Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 1 Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 2 Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 3 Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 4 Beaverton OR PTLGORIAAMD  8656 GLOBAL CROSSING LOCAL SERVICES, INC. - OR 672      
503-523 5 Beaverton OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672      
503-523 6 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2006-04-07   
503-523 7 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2006-04-07   
503-523 8 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2006-06-11   
503-523 9 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2006-06-11   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.