OXFORD SEMICONDUCTOR LTD.

Any device whose MAC address begins with 00:30:E0 has a network interface built by OXFORD SEMICONDUCTOR 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

00:30:E0

Organization

OXFORD SEMICONDUCTOR LTD.

Address

25 MILTON PARK Abingdon Oxon GB OX14 4SH

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.