Night Owl SP

Any device whose MAC address begins with 54:2B:57 has a network interface built by Night Owl SP. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

54:2B:57

Organization

Night Owl SP

Address

4720 Radio Rd Naples FL US 34104

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.