Kai-EE

Any device whose MAC address begins with 78:3C:E3 has a network interface built by Kai-EE. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

78:3C:E3

Organization

Kai-EE

Address

3F.-12, No.79, Sec. 1, Xintai 5th Rd., New Taipei City TW 22101

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.