What this means
The IEEE assigned the MA-L block B49DFD 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 B4:9D:FD, it is Shenzhen SDMC Technology CO.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix B49DFD?
B49DFD 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 B49DFD?
Any network device with a MAC address starting B4:9D:FD was manufactured by or for Shenzhen SDMC Technology CO.,Ltd..