Clearbox Systems

Any device whose MAC address begins with 00:21:10 has a network interface built by Clearbox Systems. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:21:10

Organization

Clearbox Systems

Address

Suite 2, Level 2 Macquarie Park NSW AU 2113

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.