TD Tech

Any device whose MAC address begins with 64:44:D5 has a network interface built by TD Tech. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

64:44:D5

Organization

TD Tech

Address

15F, building D, Yeqing building, No. 9, Wangjing North Road, Chaoyang District, Beijing BeiJing CN 100102

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.