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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
564-204 A Centralia WA OLYMWA022MD  6529 T-MOBILE USA, INC. 674   2021-02-04   
564-204 0 Centralia WA TACMWA43CM2  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2021-04-22   
564-204 1 Centralia WA   483E ONVOY, LLC - WA 674   2022-03-25   
564-204 2 Centralia WA STTLWA06XLX  506J TWILIO INTERNATIONAL INC 674   2021-02-23   
564-204 3 Centralia WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-02-10   
564-204 4 Centralia WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-02-10   
564-204 5 Centralia WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2021-03-05   
564-204 6 Centralia WA OLYMWA022MD  6529 T-MOBILE USA, INC. 674   2021-02-07   
564-204 7 Centralia WA OLYMWA022MD  6529 T-MOBILE USA, INC. 674   2021-02-07   
564-204 8 Centralia WA OLYMWA022MD  6529 T-MOBILE USA, INC. 674   2021-02-07   
564-204 9 Centralia WA OLYMWA022MD  6529 T-MOBILE USA, INC. 674   2021-02-04   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.