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: 206 [Rate centres in NPA 206] [Dial plan for NPA 206]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-578 A Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674      
206-578 0 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2014-05-12   
206-578 1 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2014-05-12   
206-578 2 Des Moines WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-11-25   
206-578 3 Des Moines WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-09-20   
206-578 4 Des Moines WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-09-20   
206-578 5 Des Moines WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-09-20   
206-578 6 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2013-11-10   
206-578 7 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2013-11-10   
206-578 8 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2013-11-10   
206-578 9 Des Moines WA STTLWA060MD  5562 METROPCS, INC. 674   2014-05-12   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.