Wuhan Maritime Communication Research Institute

Any device whose MAC address begins with B4:C4:76 has a network interface built by Wuhan Maritime Communication Research Institute. 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:C4:76

Organization

Wuhan Maritime Communication Research Institute

Address

No.312 Luoyu road, Hongshan District Wuhan Hubei CN 430079

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.