Beijing Infosec Technologies Co., LTD.

Any device whose MAC address begins with E8:34:3E has a network interface built by Beijing Infosec Technologies 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

E8:34:3E

Organization

Beijing Infosec Technologies Co., LTD.

Address

Floor 4, Tower C, Global Finance and News Center Beijing Beijing CN 100052

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.