Demant Enterprise A/S

Any device whose MAC address begins with 98:D9:3D has a network interface built by Demant Enterprise A/S. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

98:D9:3D

Organization

Demant Enterprise A/S

Address

Kongebakken 9 Smorum DK 2765

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.