What this means
The IEEE assigned the MA-L block D4772B to Nanjing Ztlink 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 D4:77:2B, it is Nanjing Ztlink Network Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix D4772B?
D4772B is registered to Nanjing Ztlink Network Technology Co.,Ltd in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Nanjing Ztlink Network Technology Co.,Ltd's block covers 16,777,216 addresses.
What devices use D4772B?
Any network device with a MAC address starting D4:77:2B was manufactured by or for Nanjing Ztlink Network Technology Co.,Ltd.