ZPT R&D

Any device whose MAC address begins with 90:B4:DD has a network interface built by ZPT R&D. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

90:B4:DD

Organization

ZPT R&D

Address

Hovås Snöbärsväg 2, lgh 201 Hovås SE 43654

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.