IoT Tech Limited

Any device whose MAC address begins with AC:E9:7F has a network interface built by IoT Tech Limited. 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:E9:7F

Organization

IoT Tech Limited

Address

20b Lough Road Lisburn Antrim GB BT28 2HA

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.