What this means
The IEEE assigned the MA-L block D83D3F to JOYNED GmbH. 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 D8:3D:3F, it is JOYNED GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix D83D3F?
D83D3F is registered to JOYNED GmbH 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. JOYNED GmbH's block covers 16,777,216 addresses.
What devices use D83D3F?
Any network device with a MAC address starting D8:3D:3F was manufactured by or for JOYNED GmbH.