Tanaka S/S Ltd.

Any device whose MAC address begins with 00:05:0F has a network interface built by Tanaka S/S Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:05:0F

Organization

Tanaka S/S Ltd.

Address

1942 Nomura Hirooka Nagano 399-0702 JP

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.