Harman/Becker Automotive Systems GmbH

Any device whose MAC address begins with 9C:F5:5F has a network interface built by Harman/Becker Automotive Systems 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

9C:F5:5F

Organization

Harman/Becker Automotive Systems GmbH

Address

Becker-Göring-Straße 16 Karlsbad Baden-Württemberg DE 76307

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.