ZAO NPK RoTeK

Any device whose MAC address begins with EC:4C:4D has a network interface built by ZAO NPK RoTeK. 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:4C:4D

Organization

ZAO NPK RoTeK

Address

Bild. 119-1, Prospekt Mira Moscow Moscow RU 129223

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.