IP500 Alliance e.V.

Any device whose MAC address begins with 58:84:E4 has a network interface built by IP500 Alliance e.V.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

58:84:E4

Organization

IP500 Alliance e.V.

Address

Scharnhorststraße 16 Berlin DE 10115

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.