Smappee NV

Any device whose MAC address begins with 1C:21:56 has a network interface built by Smappee NV. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

1C:21:56

Organization

Smappee NV

Address

Evolis 104 Harelbeke BE 8530

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.