IRay Technology Co., Ltd.

Any device whose MAC address begins with 90:74:9D has a network interface built by IRay Technology 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

90:74:9D

Organization

IRay Technology Co., Ltd.

Address

11th Guiyang St., Yantai Shandong CN 264000

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.