EVI HEAT AB

Any device whose MAC address begins with 34:5B:11 has a network interface built by EVI HEAT AB. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

34:5B:11

Organization

EVI HEAT AB

Address

Box 55 Kungsaengen SE 196 22

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.