Hammerhead Systems, Inc.

Any device whose MAC address begins with 00:0D:3D has a network interface built by Hammerhead 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

00:0D:3D

Organization

Hammerhead Systems, Inc.

Address

640 Clyde Court Mountain View California US 94043

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.