I-WIN

Any device whose MAC address begins with 00:21:E4 has a network interface built by I-WIN. 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:E4

Organization

I-WIN

Address

27 Rue des Econdeaux EPINAY SUR SEINE Seine Saint Denis FR 93800

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.