Quanta Computer Inc.

Any device whose MAC address begins with 74:D4:DD has a network interface built by Quanta Computer Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

74:D4:DD

Organization

Quanta Computer Inc.

Address

No. 211, Wenhua 2nd Rd., Guishan Dist. Taoyuan City Taiwan TW 33377

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.