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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-231 A Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-231 0 Kennewick WA   624H ONVOY SPECTRUM, LLC 676      
509-231 1 Kennewick WA SPKNWADZBMD  490J DISH WIRELESS, LLC 676      
509-231 2 Kennewick WA   939H COMMIO, LLC 676      
509-231 3 Kennewick WA SPKNWA01XDY  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676      
509-231 4 Kennewick WA SPKNWA01XDY  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676      
509-231 5 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-231 6 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-231 7 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-231 8 Kennewick WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-231 9 Kennewick WA KNWCWAXA1MD  6529 T-MOBILE USA, INC. 676      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.