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: 564 [Rate centres in NPA 564] [Dial plan for NPA 564]

NXX: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
564-242 A Marysville WA EVRTWAXAX5Y  483E ONVOY, LLC - WA 674      
564-242 0 Marysville WA STTLWAWB28Z  490J BOOST SUBSCRIBERCO L.L.C. 674   2023-07-03   
564-242 1 Marysville WA STTLWAWB31Z  839J EON TELECOM, INC. 674   2023-05-05   
564-242 2 Marysville WA EVRTWAXAX5Y  483E ONVOY, LLC - WA 674   2023-03-26   
564-242 3 Marysville WA EVRTWAXAX5Y  483E ONVOY, LLC - WA 674   2023-03-26   
564-242 4 Marysville WA EVRTWAXAX5Y  483E ONVOY, LLC - WA 674   2023-03-26   
564-242 5 Marysville WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2023-05-11   
564-242 6 Marysville WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2026-09-23   
564-242 7 Marysville WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2023-06-30   
564-242 8 Marysville WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2023-05-31   
564-242 9 Marysville WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2023-03-27   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.