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.

Switch: GRRNORXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
503-879 A Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 0 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 1 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 2 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 3 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 4 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 5 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      
503-879 6 Grand Ronde OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 672      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.