From IEEE: https://regauth.standards.ieee.org/standards-ra-web/pub/view.html#registries
github: https://gist.github.com/aallan/b4bb86db86079509e6159810ae9bd3e4
API: https://api.macvendors.com/[MAC] for example: https://api.macvendors.com/0015c7
由 MAC ADDRESS 前三碼查找製造商