NetChip Technology, Inc.

Any device whose MAC address begins with 00:03:9B has a network interface built by NetChip Technology, 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

00:03:9B

Organization

NetChip Technology, Inc.

Address

335 Pioneer Way Mountain View CA US 94041

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.