Advanced-Connectek Inc.

Any device whose MAC address begins with E8:56:59 has a network interface built by Advanced-Connectek Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

E8:56:59

Organization

Advanced-Connectek Inc.

Address

No. 2,Alley 9, Lane 45, Baoxing Rd., Xiadian Dist., New Taipei City TW 231

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.