Mamiya-OP Co.,Ltd.

Any device whose MAC address begins with 00:09:BE has a network interface built by Mamiya-OP 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

00:09:BE

Organization

Mamiya-OP Co.,Ltd.

Address

3-23-10, Negishi Minami-ku Saitama-shi Saitama JP 336-8581

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.