Helmut Fischer GmbH Institut für Elektronik und Messtechnik

Any device whose MAC address begins with 00:06:58 has a network interface built by Helmut Fischer GmbH Institut für Elektronik und Messtechnik. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:06:58

Organization

Helmut Fischer GmbH Institut für Elektronik und Messtechnik

Address

Industriestraße 21 DE

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.