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.

White Swan, WA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
509-874 A WHSWWAXXRS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-874 0   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-874 2   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-874 3   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-874 5   483E ONVOY, LLC - WA 676   2020-07-20   
509-874 6   483E ONVOY, LLC - WA 676   2021-06-27   
509-874 7   508J CENTURYLINK COMMUNICATIONS LLC 676   2015-01-28   
509-874 8   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-874 9   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.