Toyo Electronics Corporation

Any device whose MAC address begins with 54:73:98 has a network interface built by Toyo Electronics 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

54:73:98

Organization

Toyo Electronics Corporation

Address

1860-38, Simoakasaka Kawagoe Saitama JP 3501155

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.