SUMEC Machinery & Electric Co.,Ltd.

Any device whose MAC address begins with EC:97:B2 has a network interface built by SUMEC Machinery & Electric 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

EC:97:B2

Organization

SUMEC Machinery & Electric Co.,Ltd.

Address

198# ChangJiang Road, XuanWu District, 17F, SUMEC Building Nanjing JiangSu CN 210018

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.