Institute 706, The Second Academy China Aerospace Science & Industry Corp

Any device whose MAC address begins with EC:3F:05 has a network interface built by Institute 706, The Second Academy China Aerospace Science & Industry Corp. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

EC:3F:05

Organization

Institute 706, The Second Academy China Aerospace Science & Industry Corp

Address

YongDing Road ,HaiDian District.BeiJing ,No.51 BeiJing CN 100854

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.