LEIFHEIT AG

Any device whose MAC address begins with E4:E4:09 has a network interface built by LEIFHEIT AG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

E4:E4:09

Organization

LEIFHEIT AG

Address

Leifhheitstreet Nassau Rheinland-Pfalz DE 56377

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.