Chinasys Technologies Limited

Any device whose MAC address begins with 00:12:0B has a network interface built by Chinasys Technologies 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

00:12:0B

Organization

Chinasys Technologies Limited

Address

10/F,CAGW Building,No.30 Haidian South Road Beijing CN 100080

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.