What this means
The IEEE assigned the MA-L block FCD5D9 to Shenzhen SDMC 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 FC:D5:D9, it is Shenzhen SDMC Technology CO.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix FCD5D9?
FCD5D9 is registered to Shenzhen SDMC 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. Shenzhen SDMC Technology CO.,Ltd.'s block covers 16,777,216 addresses.
What devices use FCD5D9?
Any network device with a MAC address starting FC:D5:D9 was manufactured by or for Shenzhen SDMC Technology CO.,Ltd..