WILO SE

Any device whose MAC address begins with 00:23:F5 has a network interface built by WILO SE. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:23:F5

Organization

WILO SE

Address

Nortkirchenstraße 100 D - 44263 Dortmund NRW DE 44263

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.