G-Star Communications Inc.

Any device whose MAC address begins with 00:0B:21 has a network interface built by G-Star 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

00:0B:21

Organization

G-Star Communications Inc.

Address

5F, 69-10, Sec. 2, Chung Cheng East Road Taipei Hsien TW 251

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.