trezor-firmware/common/defs/fido/duo.json

{
  "name": "Duo",
  "u2f": [
    {
      "app_id": "f3e2042f94607da0a9c1f3b95e0d2f2bb2e069c5bb4fa764affa647d847b7ed6",
      "label": "duosecurity.com"
    }
  ]
}