ATOM tech Inc.

Any device whose MAC address begins with 7C:DD:E9 has a network interface built by ATOM tech Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

7C:DD:E9

Organization

ATOM tech Inc.

Address

Sky Menor Yokohama 422, 2-11-2 Takashima, Nishi-ku Yokohama-shi Kanagawa JP 220-0011

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.