hopf Elektronik GmbH

Any device whose MAC address begins with 00:03:C7 has a network interface built by hopf Elektronik 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

00:03:C7

Organization

hopf Elektronik GmbH

Address

Nottebohmstraße 41 58511 Lüdenscheid 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.