Synology Incorporated

Any device whose MAC address begins with 90:09:D0 has a network interface built by Synology Incorporated. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

90:09:D0

Organization

Synology Incorporated

Address

9F., No.1, Yuandong Rd., Banqiao Dist., New Taipei City TW 220632

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.