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: 402

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-402 A Grandview WA SNSDWAXXTMD  483E ONVOY, LLC - WA 676      
509-402 0 Grandview WA   483E ONVOY, LLC - WA 676   2021-07-17   
509-402 1 Grandview WA   483E ONVOY, LLC - WA 676   2019-02-04   
509-402 2 Grandview WA   483E ONVOY, LLC - WA 676   2019-02-04   
509-402 3 Grandview WA   483E ONVOY, LLC - WA 676   2020-07-13   
509-402 4 Grandview WA   483E ONVOY, LLC - WA 676   2019-05-04   
509-402 5 Grandview WA   483E ONVOY, LLC - WA 676   2020-07-13   
509-402 6 Grandview WA   483E ONVOY, LLC - WA 676   2021-07-16   
509-402 7 Grandview WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-01-19   
509-402 8 Grandview WA   483E ONVOY, LLC - WA 676   2021-07-16   
509-402 9 Grandview WA   145J TERRA NOVA TELECOM INC. 676   2025-07-19   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.