What this means
The IEEE assigned the MA-M block 1CA0D3B to Guang Dong He Zheng Network Technology Co.,Ltd. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 1C:A0:D3:B, it is Guang Dong He Zheng Network Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 1CA0D3B?
1CA0D3B is registered to Guang Dong He Zheng Network Technology Co.,Ltd in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Guang Dong He Zheng Network Technology Co.,Ltd's block covers 1,048,576 addresses.
What devices use 1CA0D3B?
Any network device with a MAC address starting 1C:A0:D3:B was manufactured by or for Guang Dong He Zheng Network Technology Co.,Ltd.