Bull Group Co., Ltd

Any device whose MAC address begins with C4:11:E0 has a network interface built by Bull Group 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

C4:11:E0

Organization

Bull Group Co., Ltd

Address

No.32 Sanhai Road,East Guanhaiwei Industrial Zone, Cixi City, Zhejiang, P.R.China Cixi Zhejiang CN 315314

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.