What this means
The IEEE assigned the MA-L block D4223F to Lenovo Mobile Communication 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 D4:22:3F, it is Lenovo Mobile Communication Technology Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix D4223F?
D4223F is registered to Lenovo Mobile Communication Technology 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. Lenovo Mobile Communication Technology Ltd.'s block covers 16,777,216 addresses.
What devices use D4223F?
Any network device with a MAC address starting D4:22:3F was manufactured by or for Lenovo Mobile Communication Technology Ltd..