CJSC NORSI-TRANS

Any device whose MAC address begins with 30:B3:46 has a network interface built by CJSC NORSI-TRANS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

30:B3:46

Organization

CJSC NORSI-TRANS

Address

B.Novodmitrovskaya, 12/15 floor 2 r. 36 Moscow MOSCOW RU 127015

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.