AlphaTech PLC Int’l Co., Ltd.

Any device whose MAC address begins with 50:3A:7D has a network interface built by AlphaTech PLC Int’l 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

50:3A:7D

Organization

AlphaTech PLC Int’l Co., Ltd.

Address

13F., No.618, Sec. 7, New Taipei Blvd., Xinzhuang Dist., New Taipei City TW 24260

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.