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: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-304 A Cle Elum WA YAKMWA020MD  6529 T-MOBILE USA, INC. 676      
509-304 2 Cle Elum WA YAKMWA020MD  6529 T-MOBILE USA, INC. 676   2021-02-28   
509-304 3 Cle Elum WA CLELWA170MD  2423 INLAND TEL CO 676   2010-09-23   
509-304 4 Cle Elum WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2003-10-13   
509-304 5 Cle Elum WA KNWCWABB1MD  6270 UNITED STATES CELLULAR - WA 676   2004-05-20   
509-304 6 Cle Elum WA   6529 T-MOBILE USA, INC. 676   2004-05-23   
509-304 7 Cle Elum WA YAKMWA020MD  6529 T-MOBILE USA, INC. 676   2007-12-17   
509-304 8 Cle Elum WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2006-01-24   
509-304 9 Cle Elum WA YAKMWA020MD  6529 T-MOBILE USA, INC. 676      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.