Acronet Co., Ltd.

Any device whose MAC address begins with 00:04:FF has a network interface built by Acronet 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:FF

Organization

Acronet Co., Ltd.

Address

Saman B/D 2Fl KR 137-064

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.