BYK-Gardner GmbH

Any device whose MAC address begins with 30:51:F8 has a network interface built by BYK-Gardner GmbH. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

30:51:F8

Organization

BYK-Gardner GmbH

Address

Lausitzer Strasse 8 Geretsried Bavarian DE 82538

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.