Bitmain Technologies Inc

Any device whose MAC address begins with E0:A5:09 has a network interface built by Bitmain Technologies 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

E0:A5:09

Organization

Bitmain Technologies Inc

Address

Building 25, North Olympic Science & Technology Park, Baosheng South Road, Haidian District, Beijing, China Beijing BEIJING CN CHINA

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.