Kastle Systems

Any device whose MAC address begins with 7C:55:A7 has a network interface built by Kastle Systems. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

7C:55:A7

Organization

Kastle Systems

Address

6402 Arlington Blvd Falls Church VA US 22042

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.