Shenzhen Xinyin technology company

Any device whose MAC address begins with 28:D0:44 has a network interface built by Shenzhen Xinyin technology company. 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:D0:44

Organization

Shenzhen Xinyin technology company

Address

2/F, Building C, Jianxing Technology Building, Shahe West Road, Xili Street, Nanshan District Shenzhen Guangdong CN 518055

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.