GCI Science & Technology Co.,LTD

Any device whose MAC address begins with B4:01:42 has a network interface built by GCI Science & Technology 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

B4:01:42

Organization

GCI Science & Technology Co.,LTD

Address

No.381,xingangzhong road , GuangZhou GuangDong CN 510310

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.