Power-One

Any device whose MAC address begins with DC:57:26 has a network interface built by Power-One. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

DC:57:26

Organization

Power-One

Address

Via San Girgio 642 Terranuova Arezzo IT 52028

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.