Sleep Number

Any device whose MAC address begins with E0:23:D7 has a network interface built by Sleep Number. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

E0:23:D7

Organization

Sleep Number

Address

1001 Third Avenue South Minneapolis MN US 55404

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.