LSY Defense, LLC.

Any device whose MAC address begins with 54:2A:9C has a network interface built by LSY Defense, 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

54:2A:9C

Organization

LSY Defense, LLC.

Address

4175 Westport Rd. Louisville Kentucky US 40207

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.