BROWN'S OPERATING SYSTEM SERVICES, LTD.

Any device whose MAC address begins with 00:20:9E has a network interface built by BROWN'S OPERATING SYSTEM SERVICES, LTD.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:20:9E

Organization

BROWN'S OPERATING SYSTEM SERVICES, LTD.

Address

ST. AGNES HOUSE, CRESSWELL PK, BLACKHEATH, London SE3 9RD GB

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.