Seiko Instruments Inc.

Any device whose MAC address begins with 08:00:83 has a network interface built by Seiko Instruments 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

08:00:83

Organization

Seiko Instruments Inc.

Address

8, Nakase 1-chome Mihama-ku Chiba-shi Chiba JP 261-8507

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.