Yucca Technology Company Limited.

Any device whose MAC address begins with A4:D5:01 has a network interface built by Yucca Technology Company Limited.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:D5:01

Organization

Yucca Technology Company Limited.

Address

Building 20, Caohejing Pujiang Tech Square, 2388 Chenhang Road, Pujiang Town, Minhang District Shanghai Shanghai CN 201114

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.