Guangzhou Mudi Information Technology Co., Ltd

Any device whose MAC address begins with 40:99:E3 has a network interface built by Guangzhou Mudi Information Technology 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

40:99:E3

Organization

Guangzhou Mudi Information Technology Co., Ltd

Address

Room 403, 404, No. 8, Yongtai Taixing Road, Yongping Street, Baiyun District, Guangzhou city Guangzhou City Guangdong Province CN 510000

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.