Crossbeam Systems, Inc.

Any device whose MAC address begins with 00:03:D2 has a network interface built by Crossbeam Systems, 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

00:03:D2

Organization

Crossbeam Systems, Inc.

Address

80 Central Street Boxborough MA US 01719

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.