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

{
  "name": "FastMail",
  "u2f": [
    {
      "app_id": "6966abe3674ea2f53079eb710197848c9be6f363992fd029e9898447cb9f0084",
      "label": "www.fastmail.com"
    }
  ]
}