OOSIC Technology CO.,Ltd

Any device whose MAC address begins with 38:66:45 has a network interface built by OOSIC 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

38:66:45

Organization

OOSIC Technology CO.,Ltd

Address

8F,No 1559, Zuchongzhi Road Shanghai CN 201203

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.