DMATEK Co., Ltd.

Any device whose MAC address begins with AC:20:AA has a network interface built by DMATEK Co., 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

AC:20:AA

Organization

DMATEK Co., Ltd.

Address

11F.-2, No.386, Shizheng Rd., Xitun Dist., Taichung TW 40757

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.