What this means
The IEEE assigned the MA-L block 00214D to Guangzhou Skytone Transmission Technology Com. 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 00:21:4D, it is Guangzhou Skytone Transmission Technology Com. Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 00214D?
00214D is registered to Guangzhou Skytone Transmission Technology Com. 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. Guangzhou Skytone Transmission Technology Com. Ltd.'s block covers 16,777,216 addresses.
What devices use 00214D?
Any network device with a MAC address starting 00:21:4D was manufactured by or for Guangzhou Skytone Transmission Technology Com. Ltd..