tci GmbH

Any device whose MAC address begins with AC:D9:D6 has a network interface built by tci GmbH. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

AC:D9:D6

Organization

tci GmbH

Address

Ludwig-Rinn-Straße 10-14 Heuchelheim Hessen US 35452

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.