Slim Devices, Inc.

Any device whose MAC address begins with 00:04:20 has a network interface built by Slim Devices, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:04:20

Organization

Slim Devices, Inc.

Address

12 South First St. San Jose CA US 95113

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.