Jabil Circuit (Guangzhou) Ltd.

Any device whose MAC address begins with B4:41:30 has a network interface built by Jabil Circuit (Guangzhou) 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

B4:41:30

Organization

Jabil Circuit (Guangzhou) Ltd.

Address

128, Jun Cheng Road, East Section Technological Development District,Guangzhou Economic, Guangzhou CN 510530

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.