Montage Technology Group Limited

Any device whose MAC address begins with 80:05:DF has a network interface built by Montage Technology Group Limited. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

80:05:DF

Organization

Montage Technology Group Limited

Address

Rm#A16F, Technolgy Blgd.,Yishan Rd. Shanghai CN 200233

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.