Sysorex Global Holdings

Any device whose MAC address begins with 04:53:D5 has a network interface built by Sysorex Global Holdings. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

04:53:D5

Organization

Sysorex Global Holdings

Address

Suite 195 2479 E. Bayshore Road Palo Alto CA US 94303

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.