What this means
The IEEE assigned the MA-L block D0F121 to Xi'an LINKSCI 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 D0:F1:21, it is Xi'an LINKSCI Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix D0F121?
D0F121 is registered to Xi'an LINKSCI 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. Xi'an LINKSCI Technology Co., Ltd's block covers 16,777,216 addresses.
What devices use D0F121?
Any network device with a MAC address starting D0:F1:21 was manufactured by or for Xi'an LINKSCI Technology Co., Ltd.