Nanjing Ztlink Network Technology Co.,Ltd

Any device whose MAC address begins with D4:77:2B has a network interface built by Nanjing Ztlink Network 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

D4:77:2B

Organization

Nanjing Ztlink Network Technology Co.,Ltd

Address

No.0 Mozhou East Road , Jiangning Economic & Technological Development Zone, Jiangning District Nanjing Jiangsu CN 211111

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.