Hirschmann Automation

Any device whose MAC address begins with EC:E5:55 has a network interface built by Hirschmann Automation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

EC:E5:55

Organization

Hirschmann Automation

Address

Stuttgarter Straße 45-51 Neckartenzlingen Baden-Württemberg DE 72654

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.