YAMAHA CORPORATION

Any device whose MAC address begins with AC:44:F2 has a network interface built by YAMAHA CORPORATION. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

AC:44:F2

Organization

YAMAHA CORPORATION

Address

10-1 Nakazawa-cho, Naka-ku Hamamatsu Shizuoka JP 430-8650

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.