Oak Technology

Any device whose MAC address begins with 00:03:38 has a network interface built by Oak Technology. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:03:38

Organization

Oak Technology

Address

139 Kifer Court Sunnyvale CA US 94086-5160

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.