Cilag GmbH International

Any device whose MAC address begins with 84:DD:B7 has a network interface built by Cilag GmbH International. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

84:DD:B7

Organization

Cilag GmbH International

Address

Gubelstrasse 34 Zug _ CH CH-6300

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.