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: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-384 A Portland OR PTLDOR02DS0  9638 QWEST CORPORATION 672      
503-384 0 Portland OR PTLDOR02DS0  9638 QWEST CORPORATION 672      
503-384 1 Portland OR PTLDOR02DS0  9638 QWEST CORPORATION 672      
503-384 2 Portland OR PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672      
503-384 3 Portland OR PTLDOR12DS0  9638 QWEST CORPORATION 672      
503-384 4 Portland OR PTLDOR12DS0  9638 QWEST CORPORATION 672      
503-384 5 Portland OR PTLDOR02DS0  9638 QWEST CORPORATION 672      
503-384 6 Portland OR PTLDOR12DS0  9638 QWEST CORPORATION 672      
503-384 7 Portland OR PTLDOR13DS3  9638 QWEST CORPORATION 672      
503-384 8 Portland OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672      
503-384 9 Portland OR PTLDOR02DS0  9638 QWEST CORPORATION 672      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.