BT&COM CO.,LTD

Any device whose MAC address begins with B8:B1:C7 has a network interface built by BT&COM 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

B8:B1:C7

Organization

BT&COM CO.,LTD

Address

#1103, E&C Venture Dream Tower II Seoul KR 152-719

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.