EW3 Technologies LLC

Any device whose MAC address begins with 00:21:F0 has a network interface built by EW3 Technologies 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

00:21:F0

Organization

EW3 Technologies LLC

Address

114 E 11th St Connersville IN US 47331

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.