Hangzhou Zero Zero Technology Co., Ltd.

Any device whose MAC address begins with 84:83:19 has a network interface built by Hangzhou Zero Zero 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

84:83:19

Organization

Hangzhou Zero Zero Technology Co., Ltd.

Address

Bldg 13&14, Dream Town, Hangzhou, Zhejiang 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.