Shanghai Lightningsemi Technology Co.,Ltd.

Any device whose MAC address begins with 78:0A:57 has a network interface built by Shanghai Lightningsemi 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

78:0A:57

Organization

Shanghai Lightningsemi Technology Co.,Ltd.

Address

Floor 5, Building 6,No. 9,Lane 1670，XiuYan road，ISPACE Kangqiao Intelligent Manufacturing Industrial Park，Pudong district SHANGHAI SHANGHAI CN 201315

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.