Hitachi Energy Switzerland Ltd

Any device whose MAC address begins with 00:02:A3 has a network interface built by Hitachi Energy Switzerland 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

00:02:A3

Organization

Hitachi Energy Switzerland Ltd

Address

Bruggerstrasse 72 Baden CH 5400

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.