OktoInform RUS

Any device whose MAC address begins with 50:43:B9 has a network interface built by OktoInform RUS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

50:43:B9

Organization

OktoInform RUS

Address

Bolshoy Tishinskiy pereulok, d. 26, korp.13-14, ofis 4R Moscow RU 123557

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.