ISGUS GmbH

Any device whose MAC address begins with 00:26:20 has a network interface built by ISGUS 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

00:26:20

Organization

ISGUS GmbH

Address

Oberdorfstraße 18 - 22 VS - Schwenningen BW DE 78054

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.