ATOCS (Shenzhen) LTD

Any device whose MAC address begins with 04:2F:56 has a network interface built by ATOCS (Shenzhen) 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

04:2F:56

Organization

ATOCS (Shenzhen) LTD

Address

4/F., Building 10, Tongfuyu Industry Zone, Xili Town, Shenzhen CN

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.