Sichuan tianyi kanghe communications co., LTD

Any device whose MAC address begins with B4:CF:E0 has a network interface built by Sichuan tianyi kanghe communications 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

B4:CF:E0

Organization

Sichuan tianyi kanghe communications co., LTD

Address

No.198, section 1, xueshan avenue, jinyuan town, dayi county chengdu sichuan CN 611330

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.