Biznes Systema Telecom, LLC

Any device whose MAC address begins with 84:85:53 has a network interface built by Biznes Systema Telecom, LLC. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

84:85:53

Organization

Biznes Systema Telecom, LLC

Address

room XXII/1, fl 3, block 3, 6 Barklaya street, Moscow, 121087, Russia Moscow RU 121087

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.