Digital Devices GmbH

Any device whose MAC address begins with 54:84:7B has a network interface built by Digital Devices 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

54:84:7B

Organization

Digital Devices GmbH

Address

Moewestr 45 A Muenchen DE 81827

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.