Beissbarth

Any device whose MAC address begins with 30:5D:38 has a network interface built by Beissbarth. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

30:5D:38

Organization

Beissbarth

Address

Hanauer Str. 101 Muenchen DE 80993

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.