Ritter Elektronik

Any device whose MAC address begins with 00:0B:93 has a network interface built by Ritter Elektronik. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:0B:93

Organization

Ritter Elektronik

Address

Leverkuser Straße 65 Remscheid NRW DE 42897

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.