Vantiva USA LLC

Any device whose MAC address begins with 8C:5C:20 has a network interface built by Vantiva USA LLC. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

8C:5C:20

Organization

Vantiva USA LLC

Address

6450 Sequence Drive San Diego CA US 92121

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.