Uzushio Electric Co.,Ltd.

Any device whose MAC address begins with 54:9A:16 has a network interface built by Uzushio Electric 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

54:9A:16

Organization

Uzushio Electric Co.,Ltd.

Address

105 Imabari-city Ehime pref. JP 7948582

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.