Helmut Mauell GmbH Werk Weida

Any device whose MAC address begins with D0:F7:3B has a network interface built by Helmut Mauell GmbH Werk Weida. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D0:F7:3B

Organization

Helmut Mauell GmbH Werk Weida

Address

Am Rosenhügel 1-7 Velbert DE 42553

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.