What this means
The IEEE assigned the MA-L block 5CDFB8 to Shenzhen Unionmemory Information System Limited. 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 5C:DF:B8, it is Shenzhen Unionmemory Information System Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 5CDFB8?
5CDFB8 is registered to Shenzhen Unionmemory Information System Limited 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. Shenzhen Unionmemory Information System Limited's block covers 16,777,216 addresses.
What devices use 5CDFB8?
Any network device with a MAC address starting 5C:DF:B8 was manufactured by or for Shenzhen Unionmemory Information System Limited.