What this means
The IEEE assigned the MA-M block D420001 to Zelus(HuangZhou) Technology 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 D4:20:00:1, it is Zelus(HuangZhou) Technology Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix D420001?
D420001 is registered to Zelus(HuangZhou) Technology 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. Zelus(HuangZhou) Technology Ltd.'s block covers 1,048,576 addresses.
What devices use D420001?
Any network device with a MAC address starting D4:20:00:1 was manufactured by or for Zelus(HuangZhou) Technology Ltd..