neXus ID Solutions AB

Any device whose MAC address begins with A4:D9:A4 has a network interface built by neXus ID Solutions AB. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:D9:A4

Organization

neXus ID Solutions AB

Address

Telefonvägen 26 Stockholm SE 12626

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.