ZENNIO AVANCE Y TECNOLOGIA, S.L.

Any device whose MAC address begins with 48:33:DD has a network interface built by ZENNIO AVANCE Y TECNOLOGIA, S.L.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

48:33:DD

Organization

ZENNIO AVANCE Y TECNOLOGIA, S.L.

Address

RIO JARAMA 132 NAVE P8.11 TOLEDO ES 45007

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.