Common Networks

Any device whose MAC address begins with 28:3E:76 has a network interface built by Common Networks. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:3E:76

Organization

Common Networks

Address

1390 Market St. Suite 820 San Francisco CA US 94102

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.