SHENZHEN YUNJI INTELLIGENT TECHNOLOGY CO.,LTD

Any device whose MAC address begins with 30:56:84 has a network interface built by SHENZHEN YUNJI INTELLIGENT 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

30:56:84

Organization

SHENZHEN YUNJI INTELLIGENT TECHNOLOGY CO.,LTD

Address

A-SIDE A2 BUILDING 2/F ENET NEW INDUSTRIAL PARK,NO.20 DAFU INDUSTRIAL ZONE, AOBEI COMMUNITY, GUANLAN, LONGHUA NEW DISTRICT SHENZHEN GUANGDONG CN 518000

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.