What this means
The IEEE assigned the MA-L block 00133B to Speed Dragon Multimedia 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 00:13:3B, it is Speed Dragon Multimedia Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 00133B?
00133B is registered to Speed Dragon Multimedia 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. Speed Dragon Multimedia Limited's block covers 16,777,216 addresses.
What devices use 00133B?
Any network device with a MAC address starting 00:13:3B was manufactured by or for Speed Dragon Multimedia Limited.