Quest Software, Inc.

Any device whose MAC address begins with D8:DF:7A has a network interface built by Quest Software, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D8:DF:7A

Organization

Quest Software, Inc.

Address

4 Polaris Way Aliso Viejo CA US 92656

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.