SMAX Technology Co., Ltd.

Any device whose MAC address begins with D4:A4:25 has a network interface built by SMAX Technology 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

D4:A4:25

Organization

SMAX Technology Co., Ltd.

Address

2F., No. 3, Wuquan 3rd, Wugu Dist. New Taipei City TW 248

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.