Electroacustica General Iberica, S.A.

Any device whose MAC address begins with D4:91:AF has a network interface built by Electroacustica General Iberica, S.A.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:91:AF

Organization

Electroacustica General Iberica, S.A.

Address

Avda. Almozara, 79 Zaragoza ES 50003

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.