Giga-byte Communications Inc.

Any device whose MAC address begins with 00:13:F3 has a network interface built by Giga-byte Communications 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

00:13:F3

Organization

Giga-byte Communications Inc.

Address

8F, No.43, Fu-Hsin Road. Hsin-Tien Taipei Hsien TW 231

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.