Wachendorff Automation GmbH & CO.KG

Any device whose MAC address begins with D4:90:E0 has a network interface built by Wachendorff Automation GmbH & CO.KG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:90:E0

Organization

Wachendorff Automation GmbH & CO.KG

Address

Industriestraße 7 Geisenheim DE 65366

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.