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: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 605

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-605 A Wilbur WA WLBRWA060MD  3229 COMPUTERS 5*, INC. DBA LOCALTEL - WA 676      
509-605 5 Wilbur WA WLBRWA060MD  3229 COMPUTERS 5*, INC. DBA LOCALTEL - WA 676   2020-12-25   
509-605 6 Wilbur WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2021-06-27   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.