SimpliSafe

Any device whose MAC address begins with F8:51:28 has a network interface built by SimpliSafe. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

F8:51:28

Organization

SimpliSafe

Address

294 Washington St Boston MA US 02108

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.