Ivium Technologies B.V.

Any device whose MAC address begins with C4:DA:7D has a network interface built by Ivium Technologies B.V.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:DA:7D

Organization

Ivium Technologies B.V.

Address

De Zaale 11 Eindhoven Noord Brabant NL 5612 AJ

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.