Landis+Gyr GmbH

Any device whose MAC address begins with 64:01:FB has a network interface built by Landis+Gyr 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

64:01:FB

Organization

Landis+Gyr GmbH

Address

Humboldtstrasse 64 Nürnberg Bavaria DE 90459

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.