Examine source code of originAS

{
  "manifest_version": 2,
  "name": "originAS",
  "version": "2.0.2resigned1",
  "description": "Looks up the origin AS for the current Website.\nIt will insert a small box with the infos on the bottom right corner.",
  "background": {
    "scripts": [
      "index.js"
    ],
    "persistent": false
  },
  "author": "Matthias Cramer <originas@freestone.net>",
  "icons": {
    "64": "media/icon-64.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "https://ip6.ch/",
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@originas"
    }
  }
}