OTN Systems N.V.

Any device whose MAC address begins with 38:9F:83 has a network interface built by OTN Systems N.V.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

38:9F:83

Organization

OTN Systems N.V.

Address

Industrielaan 17b Olen BE 2250

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.