Hitachi Energy Germany AG

Any device whose MAC address begins with 30:B2:16 has a network interface built by Hitachi Energy Germany AG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

30:B2:16

Organization

Hitachi Energy Germany AG

Address

Havellandstr. 10-14 Mannheim DE 68309

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.