STULZ GmbH

Any device whose MAC address begins with 78:BE:BD has a network interface built by STULZ 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

78:BE:BD

Organization

STULZ GmbH

Address

Holsteiner Chausse 283 Hamburg DE 22457

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.