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: 858

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-858 A Beaverton OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-858 0 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2009-04-27   
503-858 1 Beaverton OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-858 2 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2010-04-02   
503-858 3 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2010-04-12   
503-858 4 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2010-04-26   
503-858 5 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2009-04-27   
503-858 6 Beaverton OR PTLEORXMAMD  7537 LEVEL 3 TELECOM OF OREGON, LLC - OR 672      
503-858 7 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2008-09-14   
503-858 8 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2008-09-28   
503-858 9 Beaverton OR PTLDORWNAMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 672   2014-06-03   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.