GM-2 Corporation

Any device whose MAC address begins with 00:08:12 has a network interface built by GM-2 Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:08:12

Organization

GM-2 Corporation

Address

Shiba-Matushira-Bldg. Tokyo Minato-ku JP 105-0014

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.