TTTech Auto AG

Any device whose MAC address begins with 54:20:97 has a network interface built by TTTech Auto 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

54:20:97

Organization

TTTech Auto AG

Address

Operngasse 17-21 Vienna AT 1040

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.