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: 584

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-584 A Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 0 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 1 Salem OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-584 2 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 3 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 4 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 5 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 6 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 7 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 8 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      
503-584 9 Salem OR SALMOR58DS0  9638 QWEST CORPORATION 672      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.