Biodata Ltd

Any device whose MAC address begins with 40:D4:0E has a network interface built by Biodata Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:D4:0E

Organization

Biodata Ltd

Address

10 Stocks Street Manchester GB M8 8QG

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.