The Things Industries B.V.

Any device whose MAC address begins with EC:65:6E has a network interface built by The Things Industries B.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

EC:65:6E

Organization

The Things Industries B.V.

Address

Singel 542 Amsterdam Noord-Holland NL 1017 AZ

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.