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.

Mabton, WA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
509-894 A MBTNWAXXRS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 0   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 1   483E ONVOY, LLC - WA 676   2021-05-07   
509-894 2   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 3   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 4   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 5   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 7   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-894 8   483E ONVOY, LLC - WA 676   2020-07-20   
509-894 9   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 A BCTNWAXXRS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 0   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 1   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 2   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 3   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 4   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2006-09-18   
509-896 5   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 6   792K CHARTER IP ENABLED SERVICES, LLC 676   2007-06-23   
509-896 7   508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-01-26   
509-896 8   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-896 9   4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.