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: 581

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-581 A Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 0 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 1 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 2 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 3 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 4 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 5 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 6 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-581 7 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-581 8 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-581 9 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.