Shenzhen Yoostar Technology Co., Ltd

Any device whose MAC address begins with 04:99:E6 has a network interface built by Shenzhen Yoostar 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

04:99:E6

Organization

Shenzhen Yoostar Technology Co., Ltd

Address

#503，Tower D, HUA HAN Innovation Park, Shenzhen Guangdong CN 518000

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.