Ragentek Technology Group

Any device whose MAC address begins with 28:FB:D3 has a network interface built by Ragentek Technology Group. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:FB:D3

Organization

Ragentek Technology Group

Address

D10/D11，No.3188, Xiupu Road, PuDong District, Shanghai Shanghai CN 201703

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.