STR Elektronik Josef Schlechtinger GmbH

Any device whose MAC address begins with 7C:EF:61 has a network interface built by STR Elektronik Josef Schlechtinger GmbH. 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:EF:61

Organization

STR Elektronik Josef Schlechtinger GmbH

Address

Auf dem Ohl 9 Wenden DE 57482

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.