Add-On Technology Co., LTD.

Any device whose MAC address begins with 00:13:85 has a network interface built by Add-On 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

00:13:85

Organization

Add-On Technology Co., LTD.

Address

1F, No.11, Lane 206, Da-An Road Sec. 1, Taipei TW 106

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.