HTC Corporation

Any device whose MAC address begins with E8:99:C4 has a network interface built by HTC Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

E8:99:C4

Organization

HTC Corporation

Address

No. 23, Xinghua Rd., Taoyuan City Taoyuan County Taiwan TW 330

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.