Seal One AG

Any device whose MAC address begins with 5C:11:93 has a network interface built by Seal One AG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

5C:11:93

Organization

Seal One AG

Address

Berliner Str. 44 Frankfurt am Main Hessen DE 60311

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.