Makino Milling Machine Co., Ltd.

Any device whose MAC address begins with 00:04:04 has a network interface built by Makino Milling Machine 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

00:04:04

Organization

Makino Milling Machine Co., Ltd.

Address

4023 Nakatsu, Aikawa-machi Aiko-gun Kanagawa JP 243-0303

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.