Unixtar Technology, Inc.

Any device whose MAC address begins with 00:03:A7 has a network interface built by Unixtar Technology, 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

00:03:A7

Organization

Unixtar Technology, Inc.

Address

13F No. 100 Ming Chuan Road TW TAIWAN

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.