Rechnerbetriebsgruppe

Any device whose MAC address begins with 94:50:47 has a network interface built by Rechnerbetriebsgruppe. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

94:50:47

Organization

Rechnerbetriebsgruppe

Address

Werner von Siemens Str. 64 Würzburg Bayern DE 97076

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.