There Corporation Oy

Any device whose MAC address begins with 5C:35:DA has a network interface built by There Corporation Oy. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

5C:35:DA

Organization

There Corporation Oy

Address

Elimäenkatu 5 Helsinki FI 00510

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.