Intrakey technologies GmbH

Any device whose MAC address begins with 54:DF:63 has a network interface built by Intrakey technologies 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:DF:63

Organization

Intrakey technologies GmbH

Address

Wiener Strasse 114-116 Dresden Saxony DE 01219

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.