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: 864

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-864 A Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 0 Dayton OR   6529 T-MOBILE USA, INC. 672   2017-12-14   
503-864 1 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 2 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 3 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 4 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 5 Dayton OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2013-06-13   
503-864 6 Dayton OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2007-05-28   
503-864 7 Dayton OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2003-02-08   
503-864 8 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 9 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.