NTC-Metrotek

Any device whose MAC address begins with 00:21:CE has a network interface built by NTC-Metrotek. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:21:CE

Organization

NTC-Metrotek

Address

9, Nevzorovoy street Saint-Petersburg RU 192148

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.