Sycamore Networks

Any device whose MAC address begins with 00:D0:D1 has a network interface built by Sycamore Networks. 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:D0:D1

Organization

Sycamore Networks

Address

220 Mill Rd Chelmsford MA US 01824

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.