Silicon Laboratories

Any device whose MAC address begins with 28:68:47 has a network interface built by Silicon Laboratories. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:68:47

Organization

Silicon Laboratories

Address

400 West Cesar Chavez Austin TX US 78701

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.