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: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-388 A Yakima WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-388 0 Yakima WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-388 1 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2004-12-11   
509-388 2 Yakima WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2005-01-28   
509-388 3 Yakima WA KNWCWABB1MD  6270 UNITED STATES CELLULAR - WA 676   2007-09-30   
509-388 4 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-02-21   
509-388 5 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-02-21   
509-388 6 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-04-16   
509-388 7 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-04-16   
509-388 8 Yakima WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-04-16   
509-388 9 Yakima WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2006-03-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.