Pluto inc.

Any device whose MAC address begins with 20:67:B1 has a network interface built by Pluto inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

20:67:B1

Organization

Pluto inc.

Address

Hongo5-21-1-303 Bunkyo-ku Tokyo JP 113-0033

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.