Hengji Jiaye (Hangzhou) Technology Co., Ltd

Any device whose MAC address begins with D4:A5:B4 has a network interface built by Hengji Jiaye (Hangzhou) Technology Co., Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:A5:B4

Organization

Hengji Jiaye (Hangzhou) Technology Co., Ltd

Address

Room 809, Building B, Yingfeite Technology Park, No. 459 Jianghong Road, Changhe Street, Binjiang District, Hangzhou City, Zhejiang Province Hangzhou Zhejiang CN 310000

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.