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.

OCN: 1484 INLAND CELLULAR LLC

<< 1 2

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
509-629 2 Walla Walla WA   676      
509-629 3 Walla Walla WA   676      
509-629 4 Walla Walla WA   676      
509-629 7 Walla Walla WA   676      
509-629 8 Walla Walla WA   676      
509-648 8 St John WA   676   2011-06-09   
509-751 6 Clarkston WA   676      
509-751 7 Clarkston WA   676      

<< 1 2

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.