Sivantos GmbH

Any device whose MAC address begins with 20:3A:EF has a network interface built by Sivantos 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

20:3A:EF

Organization

Sivantos GmbH

Address

Henri-Dunant-Strasse 100 Erlangen Bavaria DE 91058

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.