Nippon Antenna Co., Ltd.

Any device whose MAC address begins with 00:03:69 has a network interface built by Nippon Antenna Co., Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:03:69

Organization

Nippon Antenna Co., Ltd.

Address

No. 49-8, Nishiogu, Tokyo JP 116-8561

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.