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.

Richland, WA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
509-942 4   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2006-09-15   
509-942 5   663D ELTOPIA COMMUNICATIONS, LLC - WA 676   2008-06-29   
509-942 6   4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-942 7   4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-942 8   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2007-06-21   
509-942 9   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2008-09-15   
509-943 A RCLDWAXBDS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-946 A RCLDWAXBDS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-967 A WRLDWAXARS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      

<< 1 2

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.