ABB Oy / Medium Voltage Products

Any device whose MAC address begins with 00:21:C1 has a network interface built by ABB Oy / Medium Voltage Products. 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:C1

Organization

ABB Oy / Medium Voltage Products

Address

PO Box 699 Vaasa FI FI-65101

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.