CommScope Inc

Any device whose MAC address begins with 00:40:20 has a network interface built by CommScope Inc. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:40:20

Organization

CommScope Inc

Address

Unit 1, Kinmel Park Bodelwyddan RHYL GB LL18 5TZ

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.