Research Centre Module

Any device whose MAC address begins with EC:17:66 has a network interface built by Research Centre Module. 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:17:66

Organization

Research Centre Module

Address

3 Eight March 4Th Street Moscow Moscow RU 125190

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.