3M COMPANY

Any device whose MAC address begins with 08:00:21 has a network interface built by 3M COMPANY. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

08:00:21

Organization

3M COMPANY

Address

Telecom Division Austin TX US 78726-9000

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.