[
  "stun.l.google.com:19302",
  "stun1.l.google.com:19302",
  "stun2.l.google.com:19302",
  "stun3.l.google.com:19302",
  "stun4.l.google.com:19302",
  "stun.ekiga.net",
  "stun.ideasip.com",
  "stun.schlund.de",
  "stun.stunprotocol.org:3478",
  "stun.voiparound.com",
  "stun.voipbuster.com",
  "stun.voipstunt.com",
  "stun.voxgratia.org"
]