Hitachi Industrial Equipment Systems Co.,Ltd

Any device whose MAC address begins with A4:97:BB has a network interface built by Hitachi Industrial Equipment Systems Co.,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

A4:97:BB

Organization

Hitachi Industrial Equipment Systems Co.,Ltd

Address

3, Kanda Neribei-cho Chiyoda-ku Tokyo US 101-0022

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.