Racktivity

Any device whose MAC address begins with 88:91:DD has a network interface built by Racktivity. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

88:91:DD

Organization

Racktivity

Address

Hertstokweg 5 Ternat Flanders BE 1741

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.