TRANSWARE

Any device whose MAC address begins with 00:40:9C has a network interface built by TRANSWARE. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:40:9C

Organization

TRANSWARE

Address

21, RUE DU 8 MAI 1945 FR

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.