Geberit International AG

Any device whose MAC address begins with E4:85:01 has a network interface built by Geberit International 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

E4:85:01

Organization

Geberit International AG

Address

Schachenstrasse 77 Jona SG CH 8645

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.