ChongQing Camyu Technology Development Co.,Ltd.

Any device whose MAC address begins with 40:C4:D6 has a network interface built by ChongQing Camyu Technology Development Co.,Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:C4:D6

Organization

ChongQing Camyu Technology Development Co.,Ltd.

Address

4th Floor,Tower of Venus Technology Building ,NO 60 Xing Guang Road Chong Qing CN 401121

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.