United States/Washington

  • Adams County
  • Asotin County
  • Benton County
  • Chelan County
  • Clallam County
  • Clark County
  • Columbia County
  • Cowlitz County
  • Douglas County
  • Ferry County
  • Franklin County
  • Garfield County
  • Grant County
  • Grays Harbor County
  • Island County
  • Jefferson County
  • King County
  • Kitsap County
  • Kittitas County
  • Klickitat County
  • Lewis County
  • Lincoln County
  • Mason County
  • Okanogan County
  • Pacific County
  • Pend Oreille County
  • Pierce County
  • San Juan County
  • Skagit County
  • Skamania County
  • Snohomish County
  • Spokane County
  • Stevens County
  • Thurston County
  • Wahkiakum County
  • Walla Walla County
  • Whatcom County
  • Whitman County
  • Yakima County

Telephone standard IPBX (voice over IP, VoIP) in United States Washington..