CommAgility Ltd

Any device whose MAC address begins with 00:21:E0 has a network interface built by CommAgility Ltd. 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:E0

Organization

CommAgility Ltd

Address

Holywell Park Loughborough Leics GB LE11 3AQ

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.